The interstellar object that passed through the solar system continues to provide surprises:<\/p>\n
Hubble sees `Oumuamua getting a boost<\/strong><\/a>\u00a0<\/strong>\nNew results indicate interstellar nomad is a comet\u00a0<\/em><\/p>\n<\/iframe><\/span><\/p>\n<p>`Oumuamua, the first interstellar object discovered in the Solar System, is moving away from the Sun faster than expected. This anomalous behaviour was detected using the NASA\/ESA Hubble Space Telescope in cooperation with ground-based telescopes. The new results suggest that `Oumuamua is most likely a comet and not an asteroid. The discovery appears in the journal Nature.<\/p>\n<figure id=\"attachment_16295\" aria-describedby=\"caption-attachment-16295\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.spacetelescope.org\/images\/heic1813b\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16295\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=16295\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1.jpg\" data-orig-size=\"700,382\" data-comments-opened=\"0\" data-image-meta=\"{"aperture":"0","credit":"ESA","camera":"","caption":"This diagram shows the orbit of the interstellar object \\u2018Oumuamua as it passes through the Solar System. It shows the predicted path of \\u2018Oumuamua and the new course, taking the new measured velocity of the object into account. \\u2018Oumuamua passed the distance of Jupiter\\u2019s orbit in early May 2018 and will pass Saturn\\u2019s orbit January 2019. It will reach a distance corresponding to Uranus\\u2019 orbit in August 2020 and of Neptune in late June 2024. In late 2025 \\u2018Oumuamua will reach the outer edge of the Kuiper Belt, and then the heliopause \\u2014 the edge of the Solar System \\u2014 in November 2038.","created_timestamp":"1530126000","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"Predicted position of `Oumuamua versus observed position","orientation":"0"}\" data-image-title=\"Predicted position of `Oumuamua versus observed position\" data-image-description=\"\" data-image-caption=\"<p>This diagram shows the orbit of the interstellar object \u2018Oumuamua as it passes through the Solar System. It shows the predicted path of \u2018Oumuamua and the new course, taking the new measured velocity of the object into account. \u2018Oumuamua passed the distance of Jupiter\u2019s orbit in early May 2018 and will pass Saturn\u2019s orbit January 2019. It will reach a distance corresponding to Uranus\u2019 orbit in August 2020 and of Neptune in late June 2024. In late 2025 \u2018Oumuamua will reach the outer edge of the Kuiper Belt, and then the heliopause \u2014 the edge of the Solar System \u2014 in November 2038.<\/p>\n\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1.jpg\" class=\"wp-image-16295\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1.jpg\" alt=\"\" width=\"500\" height=\"273\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1.jpg 700w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1-300x164.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption id=\"caption-attachment-16295\" class=\"wp-caption-text\"><em><a href=\"https:\/\/www.spacetelescope.org\/images\/heic1813b\/\" target=\"_blank\" rel=\"noopener\">This diagram<\/a> shows the orbit of the interstellar object \u2018Oumuamua as it passes through the Solar System. It shows the predicted path of \u2018Oumuamua and the new course, taking the new measured velocity of the object into account. \u2018Oumuamua passed the distance of Jupiter\u2019s orbit in early May 2018 and will pass Saturn\u2019s orbit January 2019. It will reach a distance corresponding to Uranus\u2019 orbit in August 2020 and of Neptune in late June 2024. In late 2025 \u2018Oumuamua will reach the outer edge of the Kuiper Belt, and then the heliopause \u2014 the edge of the Solar System \u2014 in November 2038.<\/em><\/figcaption><\/figure>\n<p>`Oumuamua \u2014 the first interstellar object discovered within our Solar System \u2014 has been the subject of intense scrutiny since its discovery in October 2017\u00a0<a href=\"#1\">[1]<\/a>. Now, by combining data from the NASA\/ESA Hubble Space Telescope, the\u00a0<a href=\"http:\/\/www.cfht.hawaii.edu\/\" target=\"_blank\" rel=\"noopener\">Canada-France-Hawaii Telescope<\/a>,\u00a0<a href=\"http:\/\/eso.org\/public\/\">ESO\u2019s Very Large Telescope<\/a>\u00a0and the\u00a0<a href=\"http:\/\/www.gemini.edu\/\" target=\"_blank\" rel=\"noopener\">Gemini South Telescope<\/a>, an international team of astronomers has found that the object is moving faster than predicted. The measured gain in speed is tiny and `Oumuamua is still slowing down because of the pull of the Sun \u2014 just not as fast as predicted by celestial mechanics.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"1600\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/iwv1RxtsmA0?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>The team, led by Marco Micheli (European Space Agency) explored several scenarios to explain the faster-than-predicted speed of this peculiar interstellar visitor. The most likely explanation is that `Oumuamua is venting material from its surface due to solar heating \u2014 a behaviour known as\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Outgassing\" target=\"_blank\" rel=\"noopener\">outgassing<\/a>\u00a0<a href=\"#2\">[2]<\/a>. The thrust from this ejected material is thought to provide the small but steady push that is sending `Oumuamua hurtling out of the Solar System faster than expected \u2014 as of 1 June, it is travelling with about 114 000 kilometres per hour.<\/p>\n<p>Such outgassing is a typical behaviour for comets and contradicts the previous classification of `Oumuamua as an interstellar asteroid.<\/p>\n<p style=\"padding-left: 30px;\"><em>\u201cWe think this is a tiny, weird comet,\u201d<\/em>\u00a0comments Marco Micheli.\u00a0<em>\u201cWe can see in the data that its boost is getting smaller the farther away it travels from the Sun, which is typical for comets.\u201d<\/em><\/p>\n<p>Usually, when comets are warmed by the Sun they eject dust and gas, which form a cloud of material \u2014 called a\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Coma_(cometary)\" target=\"_blank\" rel=\"noopener\">coma<\/a>\u00a0\u2014 around them, as well as the\u00a0characteristic\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Comet_tail\" target=\"_blank\" rel=\"noopener\">tail<\/a>. However, the research team could not detect any visual evidence of outgassing.<\/p>\n<p style=\"padding-left: 30px;\"><em>\u201cWe did not see any dust, coma, or tail, which is unusual,\u201d<\/em>\u00a0explains co-author Karen Meech (University of Hawaii, USA) who led the discovery team\u2019s characterisation of `Oumuamua in 2017.\u00a0<em>\u201cWe think \u00a0that \u2018Oumuamua may vent unusually large, coarse dust grains.\u201d<\/em><\/p>\n<p>The team speculated that perhaps the small dust grains adorning the surface of most comets eroded during `Oumuamua\u2019s journey through interstellar space, with only larger dust grains remaining. A cloud of these larger particles would not be bright enough to be detected by Hubble.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"1600\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/eAtvBDuGDPg?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>Not only is `Oumuamua\u2019s hypothesised outgassing an unsolved mystery, but also its interstellar origin. The team originally performed the new observations on `Oumuamua to exactly determine its path which would have probably allowed it to trace the object back to its parent star system.\u00a0The new results means it will be more challenging to obtain this information.<\/p>\n<p style=\"padding-left: 30px;\"><em>\u201cThe true nature of this enigmatic interstellar nomad may remain a mystery,\u201d\u00a0concludes team member Olivier Hainaut (European Southern Observatory, Germany).\u00a0\u201c`Oumuamua\u2019s recently-detected gain in speed makes it more difficult to be able to trace the path it took from its extrasolar home star.\u201d<\/em><\/p>\n<p><figure id=\"attachment_16296\" aria-describedby=\"caption-attachment-16296\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.spacetelescope.org\/images\/heic1813a\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16296\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=16296\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1.jpg\" data-orig-size=\"700,510\" data-comments-opened=\"0\" data-image-meta=\"{"aperture":"0","credit":"ESA\/Hubble, NASA, ESO, M. Kornme","camera":"","caption":"This artist\\u2019s impression shows the first interstellar object discovered in the Solar System, `Oumuamua. Observations made with the NASA\/ESA Hubble Space Telescope and others show that the object is moving faster than predicted while leaving the Solar System. Researchers assume that venting material from its surface due to solar heating is responsible for this behaviour. This outgassing can be seen in this artist\\u2019s impression as a subtle cloud being ejected from the side of the object facing the Sun. As outgassing is a behaviour typical for comets, the team thinks that `Oumuamua\\u2019s previous classification as an interstellar asteroid has to be corrected.","created_timestamp":"1530126000","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"Artist\\u2019s impression of the interstellar asteroid `Oumuamua","orientation":"0"}\" data-image-title=\"Artist\u2019s impression of the interstellar asteroid `Oumuamua\" data-image-description=\"\" data-image-caption=\"<p>This artist\u2019s impression shows the first interstellar object discovered in the Solar System, `Oumuamua. Observations made with the NASA\/ESA Hubble Space Telescope and others show that the object is moving faster than predicted while leaving the Solar System. Researchers assume that venting material from its surface due to solar heating is responsible for this behaviour. This outgassing can be seen in this artist\u2019s impression as a subtle cloud being ejected from the side of the object facing the Sun. As outgassing is a behaviour typical for comets, the team thinks that `Oumuamua\u2019s previous classification as an interstellar asteroid has to be corrected.<\/p>\n\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1.jpg\" class=\"wp-image-16296\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1.jpg\" alt=\"\" width=\"500\" height=\"364\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1.jpg 700w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1-300x219.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption id=\"caption-attachment-16296\" class=\"wp-caption-text\"><em>This artist\u2019s impression shows the first interstellar object discovered in the Solar System, `Oumuamua. Observations made with the NASA\/ESA Hubble Space Telescope and others show that the object is moving faster than predicted while leaving the Solar System. Researchers assume that venting material from its surface due to solar heating is responsible for this behaviour. This outgassing can be seen in this artist\u2019s impression as a subtle cloud being ejected from the side of the object facing the Sun. As outgassing is a behaviour typical for comets, the team thinks that `Oumuamua\u2019s previous classification as an interstellar asteroid has to be corrected. [<a href=\"https:\/\/www.spacetelescope.org\/images\/heic1813a\/\" target=\"_blank\" rel=\"noopener\">Higher res images<\/a>]<\/em><\/figcaption><\/figure><strong>Notes<\/strong><\/p>\n<p><a class=\"anchor\" name=\"1\"><\/a>[1]`Oumuamua, pronounced \u201coh-MOO-ah-MOO-ah\u201d, was first discovered using the Pan-STARRS telescope at the Haleakala Observatory, Hawaii. Its name means \u201ca messenger from afar, arriving first\u201d in Hawaiian, and reflects its nature as the first known object of interstellar origin to have entered the Solar System.<\/p>\n<p><a class=\"anchor\" name=\"2\"><\/a>[2]\u00a0The team tested several hypotheses to explain the unexpected change in speed. They analysed whether\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Radiation_pressure#Solar_radiation_pressure\" target=\"_blank\" rel=\"noopener\">solar radiation pressure<\/a>, the\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Yarkovski_effect\" target=\"_blank\" rel=\"noopener\">Yarkovsky effect<\/a>, or friction-like effects could explain the observations. It was also checked whether the gain in speed could have been caused by an impulse event (such as a collision), by `Oumuamua being a binary object or by `Oumuamua being a magnetised object. Also, the unlikely theory that `Oumuamua is an interstellar spaceship was rejected: the smooth and continuous change in speed is not typical for thrusters and the object is tumbling on all three axes, speaking against it being an artificial object.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The interstellar object that passed through the solar system continues to provide surprises: Hubble sees `Oumuamua getting a boost\u00a0 New results indicate interstellar nomad is a comet\u00a0 `Oumuamua, the first interstellar object discovered in the Solar System, is moving away from the Sun faster than expected. This anomalous behaviour was detected using the NASA\/ESA Hubble … <a href=\"https:\/\/hobbyspace.com\/Blog\/?p=16294\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Hubble: Interstellar visitor ‘Oumuamua leaving faster than expected<\/span> <span class=\"meta-nav\">→<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[75,12,13],"tags":[],"class_list":["post-16294","post","type-post","status-publish","format-standard","hentry","category-asteroids","category-astronomy","category-space-science"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-4eO","jetpack-related-posts":[{"id":15215,"url":"https:\/\/hobbyspace.com\/Blog\/?p=15215","url_meta":{"origin":16294,"position":0},"title":"ESO: VLT detects unusual features of first observed interstellar asteroid","author":"TopSpacer","date":"November 20, 2017","format":false,"excerpt":"A new report from the ESO (European Southern Observatory): ESO Observations Show First Interstellar Asteroid is Like Nothing Seen Before For the first time ever astronomers have studied an asteroid that has entered the Solar System from interstellar space. Observations from ESO\u2019s Very Large Telescope in Chile and other observatories\u2026","rel":"","context":"In "Asteroids & Comets"","block_context":{"text":"Asteroids & Comets","link":"https:\/\/hobbyspace.com\/Blog\/?cat=75"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/11\/eso1737a1.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/11\/eso1737a1.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/11\/eso1737a1.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/11\/eso1737a1.jpg?resize=700%2C400 2x"},"classes":[]},{"id":23712,"url":"https:\/\/hobbyspace.com\/Blog\/?p=23712","url_meta":{"origin":16294,"position":1},"title":"ESO: Interstellar object could be the most pristine comet ever seen","author":"TopSpacer","date":"March 30, 2021","format":false,"excerpt":"A new report from the European Southern Observatory (ESO) First interstellar comet may be the most pristine ever found New observations with the European Southern Observatory\u2019s Very Large Telescope (ESO\u2019s VLT) indicate that the rogue comet 2I\/Borisov, which is only the second and most recently detected interstellar visitor to our\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2021\/03\/eso2106a1-500x295.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":19962,"url":"https:\/\/hobbyspace.com\/Blog\/?p=19962","url_meta":{"origin":16294,"position":2},"title":"Space sciences roundup – Oct.18.2019","author":"TopSpacer","date":"October 18, 2019","format":false,"excerpt":"A sampling of recent articles, videos, and images from space-related science news items (find previous roundups here): Astronomy ** A better view of an interstellar comet 2I\/Borisov: Hubble Observes New Interstellar Visitor | ESA\/Hubble On 12 October 2019, the NASA\/ESA Hubble Space Telescope provided astronomers with their best look yet\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"Milky Way galaxy's gas recycling","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2019\/10\/stsci-h-p1946a-f-3840x21601-500x281.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":15126,"url":"https:\/\/hobbyspace.com\/Blog\/?p=15126","url_meta":{"origin":16294,"position":3},"title":"Small asteroid or comet from interstellar space makes quick visit to our solar system","author":"TopSpacer","date":"October 31, 2017","format":false,"excerpt":"Here are details from NASA about that object said to be passing by from beyond our solar system: Small Asteroid or Comet 'Visits' from Beyond the Solar System https:\/\/youtu.be\/q4EtUH1O7ac This animation shows the path of A\/2017 U1, which is an asteroid -- or perhaps a comet -- as it passed\u2026","rel":"","context":"In "Asteroids & Comets"","block_context":{"text":"Asteroids & Comets","link":"https:\/\/hobbyspace.com\/Blog\/?cat=75"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":19995,"url":"https:\/\/hobbyspace.com\/Blog\/?p=19995","url_meta":{"origin":16294,"position":4},"title":"The Space Show this week – Oct.21.2019","author":"TopSpacer","date":"October 21, 2019","format":false,"excerpt":"The guests and topics of discussion on The Space Show this week: 1. Monday, Oct. 21, 2019; 7 PM PDT (9 pm CDT; 10 PM EDT): We welcome Dr. Jose V. Lopez to discuss his paper regarding Planetary Protection in which he suggests we should be spreading Earthly molecules throughout\u2026","rel":"","context":"In "Activism"","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"The Space Show - David Livingston","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2016\/09\/moonrise1-300x158.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":23538,"url":"https:\/\/hobbyspace.com\/Blog\/?p=23538","url_meta":{"origin":16294,"position":5},"title":"The Space Show this week – Feb.8.2021","author":"TopSpacer","date":"February 8, 2021","format":false,"excerpt":"The guests and topics of discussion on The Space Show this week: 1. Monday, Feb. 1, 2021; 7 pm PDT (9 pm CDT, 10 pm EDT: No program today. 2. Tuesday, Feb. 2, 2021; 7 pm PDT (9 pm CDT, 10 pm EDT): No program today due to medical needs.\u2026","rel":"","context":"In "Activism"","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"","src":"\/\/ir-na.amazon-adsystem.com\/e\/ir?t=hobbyspace&l=am2&o=1&a=0358278147","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16294"}],"version-history":[{"count":1,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16294\/revisions"}],"predecessor-version":[{"id":16297,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16294\/revisions\/16297"}],"wp:attachment":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16294"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/iframe><\/span><\/p>\n<p>`Oumuamua, the first interstellar object discovered in the Solar System, is moving away from the Sun faster than expected. This anomalous behaviour was detected using the NASA\/ESA Hubble Space Telescope in cooperation with ground-based telescopes. The new results suggest that `Oumuamua is most likely a comet and not an asteroid. The discovery appears in the journal Nature.<\/p>\n<figure id=\"attachment_16295\" aria-describedby=\"caption-attachment-16295\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.spacetelescope.org\/images\/heic1813b\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16295\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=16295\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1.jpg\" data-orig-size=\"700,382\" data-comments-opened=\"0\" data-image-meta=\"{"aperture":"0","credit":"ESA","camera":"","caption":"This diagram shows the orbit of the interstellar object \\u2018Oumuamua as it passes through the Solar System. It shows the predicted path of \\u2018Oumuamua and the new course, taking the new measured velocity of the object into account. \\u2018Oumuamua passed the distance of Jupiter\\u2019s orbit in early May 2018 and will pass Saturn\\u2019s orbit January 2019. It will reach a distance corresponding to Uranus\\u2019 orbit in August 2020 and of Neptune in late June 2024. In late 2025 \\u2018Oumuamua will reach the outer edge of the Kuiper Belt, and then the heliopause \\u2014 the edge of the Solar System \\u2014 in November 2038.","created_timestamp":"1530126000","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"Predicted position of `Oumuamua versus observed position","orientation":"0"}\" data-image-title=\"Predicted position of `Oumuamua versus observed position\" data-image-description=\"\" data-image-caption=\"<p>This diagram shows the orbit of the interstellar object \u2018Oumuamua as it passes through the Solar System. It shows the predicted path of \u2018Oumuamua and the new course, taking the new measured velocity of the object into account. \u2018Oumuamua passed the distance of Jupiter\u2019s orbit in early May 2018 and will pass Saturn\u2019s orbit January 2019. It will reach a distance corresponding to Uranus\u2019 orbit in August 2020 and of Neptune in late June 2024. In late 2025 \u2018Oumuamua will reach the outer edge of the Kuiper Belt, and then the heliopause \u2014 the edge of the Solar System \u2014 in November 2038.<\/p>\n\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1.jpg\" class=\"wp-image-16295\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1.jpg\" alt=\"\" width=\"500\" height=\"273\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1.jpg 700w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813b1-300x164.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption id=\"caption-attachment-16295\" class=\"wp-caption-text\"><em><a href=\"https:\/\/www.spacetelescope.org\/images\/heic1813b\/\" target=\"_blank\" rel=\"noopener\">This diagram<\/a> shows the orbit of the interstellar object \u2018Oumuamua as it passes through the Solar System. It shows the predicted path of \u2018Oumuamua and the new course, taking the new measured velocity of the object into account. \u2018Oumuamua passed the distance of Jupiter\u2019s orbit in early May 2018 and will pass Saturn\u2019s orbit January 2019. It will reach a distance corresponding to Uranus\u2019 orbit in August 2020 and of Neptune in late June 2024. In late 2025 \u2018Oumuamua will reach the outer edge of the Kuiper Belt, and then the heliopause \u2014 the edge of the Solar System \u2014 in November 2038.<\/em><\/figcaption><\/figure>\n<p>`Oumuamua \u2014 the first interstellar object discovered within our Solar System \u2014 has been the subject of intense scrutiny since its discovery in October 2017\u00a0<a href=\"#1\">[1]<\/a>. Now, by combining data from the NASA\/ESA Hubble Space Telescope, the\u00a0<a href=\"http:\/\/www.cfht.hawaii.edu\/\" target=\"_blank\" rel=\"noopener\">Canada-France-Hawaii Telescope<\/a>,\u00a0<a href=\"http:\/\/eso.org\/public\/\">ESO\u2019s Very Large Telescope<\/a>\u00a0and the\u00a0<a href=\"http:\/\/www.gemini.edu\/\" target=\"_blank\" rel=\"noopener\">Gemini South Telescope<\/a>, an international team of astronomers has found that the object is moving faster than predicted. The measured gain in speed is tiny and `Oumuamua is still slowing down because of the pull of the Sun \u2014 just not as fast as predicted by celestial mechanics.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"1600\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/iwv1RxtsmA0?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>The team, led by Marco Micheli (European Space Agency) explored several scenarios to explain the faster-than-predicted speed of this peculiar interstellar visitor. The most likely explanation is that `Oumuamua is venting material from its surface due to solar heating \u2014 a behaviour known as\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Outgassing\" target=\"_blank\" rel=\"noopener\">outgassing<\/a>\u00a0<a href=\"#2\">[2]<\/a>. The thrust from this ejected material is thought to provide the small but steady push that is sending `Oumuamua hurtling out of the Solar System faster than expected \u2014 as of 1 June, it is travelling with about 114 000 kilometres per hour.<\/p>\n<p>Such outgassing is a typical behaviour for comets and contradicts the previous classification of `Oumuamua as an interstellar asteroid.<\/p>\n<p style=\"padding-left: 30px;\"><em>\u201cWe think this is a tiny, weird comet,\u201d<\/em>\u00a0comments Marco Micheli.\u00a0<em>\u201cWe can see in the data that its boost is getting smaller the farther away it travels from the Sun, which is typical for comets.\u201d<\/em><\/p>\n<p>Usually, when comets are warmed by the Sun they eject dust and gas, which form a cloud of material \u2014 called a\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Coma_(cometary)\" target=\"_blank\" rel=\"noopener\">coma<\/a>\u00a0\u2014 around them, as well as the\u00a0characteristic\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Comet_tail\" target=\"_blank\" rel=\"noopener\">tail<\/a>. However, the research team could not detect any visual evidence of outgassing.<\/p>\n<p style=\"padding-left: 30px;\"><em>\u201cWe did not see any dust, coma, or tail, which is unusual,\u201d<\/em>\u00a0explains co-author Karen Meech (University of Hawaii, USA) who led the discovery team\u2019s characterisation of `Oumuamua in 2017.\u00a0<em>\u201cWe think \u00a0that \u2018Oumuamua may vent unusually large, coarse dust grains.\u201d<\/em><\/p>\n<p>The team speculated that perhaps the small dust grains adorning the surface of most comets eroded during `Oumuamua\u2019s journey through interstellar space, with only larger dust grains remaining. A cloud of these larger particles would not be bright enough to be detected by Hubble.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"1600\" height=\"900\" src=\"https:\/\/www.youtube.com\/embed\/eAtvBDuGDPg?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en&autohide=2&wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>Not only is `Oumuamua\u2019s hypothesised outgassing an unsolved mystery, but also its interstellar origin. The team originally performed the new observations on `Oumuamua to exactly determine its path which would have probably allowed it to trace the object back to its parent star system.\u00a0The new results means it will be more challenging to obtain this information.<\/p>\n<p style=\"padding-left: 30px;\"><em>\u201cThe true nature of this enigmatic interstellar nomad may remain a mystery,\u201d\u00a0concludes team member Olivier Hainaut (European Southern Observatory, Germany).\u00a0\u201c`Oumuamua\u2019s recently-detected gain in speed makes it more difficult to be able to trace the path it took from its extrasolar home star.\u201d<\/em><\/p>\n<p><figure id=\"attachment_16296\" aria-describedby=\"caption-attachment-16296\" style=\"width: 500px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.spacetelescope.org\/images\/heic1813a\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"16296\" data-permalink=\"https:\/\/hobbyspace.com\/Blog\/?attachment_id=16296\" data-orig-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1.jpg\" data-orig-size=\"700,510\" data-comments-opened=\"0\" data-image-meta=\"{"aperture":"0","credit":"ESA\/Hubble, NASA, ESO, M. Kornme","camera":"","caption":"This artist\\u2019s impression shows the first interstellar object discovered in the Solar System, `Oumuamua. Observations made with the NASA\/ESA Hubble Space Telescope and others show that the object is moving faster than predicted while leaving the Solar System. Researchers assume that venting material from its surface due to solar heating is responsible for this behaviour. This outgassing can be seen in this artist\\u2019s impression as a subtle cloud being ejected from the side of the object facing the Sun. As outgassing is a behaviour typical for comets, the team thinks that `Oumuamua\\u2019s previous classification as an interstellar asteroid has to be corrected.","created_timestamp":"1530126000","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"Artist\\u2019s impression of the interstellar asteroid `Oumuamua","orientation":"0"}\" data-image-title=\"Artist\u2019s impression of the interstellar asteroid `Oumuamua\" data-image-description=\"\" data-image-caption=\"<p>This artist\u2019s impression shows the first interstellar object discovered in the Solar System, `Oumuamua. Observations made with the NASA\/ESA Hubble Space Telescope and others show that the object is moving faster than predicted while leaving the Solar System. Researchers assume that venting material from its surface due to solar heating is responsible for this behaviour. This outgassing can be seen in this artist\u2019s impression as a subtle cloud being ejected from the side of the object facing the Sun. As outgassing is a behaviour typical for comets, the team thinks that `Oumuamua\u2019s previous classification as an interstellar asteroid has to be corrected.<\/p>\n\" data-large-file=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1.jpg\" class=\"wp-image-16296\" src=\"http:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1.jpg\" alt=\"\" width=\"500\" height=\"364\" srcset=\"https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1.jpg 700w, https:\/\/hobbyspace.com\/Blog\/wp-content\/uploads\/2018\/06\/heic1813a1-300x219.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><figcaption id=\"caption-attachment-16296\" class=\"wp-caption-text\"><em>This artist\u2019s impression shows the first interstellar object discovered in the Solar System, `Oumuamua. Observations made with the NASA\/ESA Hubble Space Telescope and others show that the object is moving faster than predicted while leaving the Solar System. Researchers assume that venting material from its surface due to solar heating is responsible for this behaviour. This outgassing can be seen in this artist\u2019s impression as a subtle cloud being ejected from the side of the object facing the Sun. As outgassing is a behaviour typical for comets, the team thinks that `Oumuamua\u2019s previous classification as an interstellar asteroid has to be corrected. [<a href=\"https:\/\/www.spacetelescope.org\/images\/heic1813a\/\" target=\"_blank\" rel=\"noopener\">Higher res images<\/a>]<\/em><\/figcaption><\/figure><strong>Notes<\/strong><\/p>\n<p><a class=\"anchor\" name=\"1\"><\/a>[1]`Oumuamua, pronounced \u201coh-MOO-ah-MOO-ah\u201d, was first discovered using the Pan-STARRS telescope at the Haleakala Observatory, Hawaii. Its name means \u201ca messenger from afar, arriving first\u201d in Hawaiian, and reflects its nature as the first known object of interstellar origin to have entered the Solar System.<\/p>\n<p><a class=\"anchor\" name=\"2\"><\/a>[2]\u00a0The team tested several hypotheses to explain the unexpected change in speed. They analysed whether\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Radiation_pressure#Solar_radiation_pressure\" target=\"_blank\" rel=\"noopener\">solar radiation pressure<\/a>, the\u00a0<a href=\"https:\/\/en.wikipedia.org\/wiki\/Yarkovski_effect\" target=\"_blank\" rel=\"noopener\">Yarkovsky effect<\/a>, or friction-like effects could explain the observations. It was also checked whether the gain in speed could have been caused by an impulse event (such as a collision), by `Oumuamua being a binary object or by `Oumuamua being a magnetised object. Also, the unlikely theory that `Oumuamua is an interstellar spaceship was rejected: the smooth and continuous change in speed is not typical for thrusters and the object is tumbling on all three axes, speaking against it being an artificial object.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The interstellar object that passed through the solar system continues to provide surprises: Hubble sees `Oumuamua getting a boost\u00a0 New results indicate interstellar nomad is a comet\u00a0 `Oumuamua, the first interstellar object discovered in the Solar System, is moving away from the Sun faster than expected. This anomalous behaviour was detected using the NASA\/ESA Hubble … <a href=\"https:\/\/hobbyspace.com\/Blog\/?p=16294\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Hubble: Interstellar visitor ‘Oumuamua leaving faster than expected<\/span> <span class=\"meta-nav\">→<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[75,12,13],"tags":[],"class_list":["post-16294","post","type-post","status-publish","format-standard","hentry","category-asteroids","category-astronomy","category-space-science"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-4eO","jetpack-related-posts":[{"id":15215,"url":"https:\/\/hobbyspace.com\/Blog\/?p=15215","url_meta":{"origin":16294,"position":0},"title":"ESO: VLT detects unusual features of first observed interstellar asteroid","author":"TopSpacer","date":"November 20, 2017","format":false,"excerpt":"A new report from the ESO (European Southern Observatory): ESO Observations Show First Interstellar Asteroid is Like Nothing Seen Before For the first time ever astronomers have studied an asteroid that has entered the Solar System from interstellar space. Observations from ESO\u2019s Very Large Telescope in Chile and other observatories\u2026","rel":"","context":"In "Asteroids & Comets"","block_context":{"text":"Asteroids & Comets","link":"https:\/\/hobbyspace.com\/Blog\/?cat=75"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/11\/eso1737a1.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/11\/eso1737a1.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/11\/eso1737a1.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/11\/eso1737a1.jpg?resize=700%2C400 2x"},"classes":[]},{"id":23712,"url":"https:\/\/hobbyspace.com\/Blog\/?p=23712","url_meta":{"origin":16294,"position":1},"title":"ESO: Interstellar object could be the most pristine comet ever seen","author":"TopSpacer","date":"March 30, 2021","format":false,"excerpt":"A new report from the European Southern Observatory (ESO) First interstellar comet may be the most pristine ever found New observations with the European Southern Observatory\u2019s Very Large Telescope (ESO\u2019s VLT) indicate that the rogue comet 2I\/Borisov, which is only the second and most recently detected interstellar visitor to our\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2021\/03\/eso2106a1-500x295.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":19962,"url":"https:\/\/hobbyspace.com\/Blog\/?p=19962","url_meta":{"origin":16294,"position":2},"title":"Space sciences roundup – Oct.18.2019","author":"TopSpacer","date":"October 18, 2019","format":false,"excerpt":"A sampling of recent articles, videos, and images from space-related science news items (find previous roundups here): Astronomy ** A better view of an interstellar comet 2I\/Borisov: Hubble Observes New Interstellar Visitor | ESA\/Hubble On 12 October 2019, the NASA\/ESA Hubble Space Telescope provided astronomers with their best look yet\u2026","rel":"","context":"In "Astronomy"","block_context":{"text":"Astronomy","link":"https:\/\/hobbyspace.com\/Blog\/?cat=12"},"img":{"alt_text":"Milky Way galaxy's gas recycling","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2019\/10\/stsci-h-p1946a-f-3840x21601-500x281.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":15126,"url":"https:\/\/hobbyspace.com\/Blog\/?p=15126","url_meta":{"origin":16294,"position":3},"title":"Small asteroid or comet from interstellar space makes quick visit to our solar system","author":"TopSpacer","date":"October 31, 2017","format":false,"excerpt":"Here are details from NASA about that object said to be passing by from beyond our solar system: Small Asteroid or Comet 'Visits' from Beyond the Solar System https:\/\/youtu.be\/q4EtUH1O7ac This animation shows the path of A\/2017 U1, which is an asteroid -- or perhaps a comet -- as it passed\u2026","rel":"","context":"In "Asteroids & Comets"","block_context":{"text":"Asteroids & Comets","link":"https:\/\/hobbyspace.com\/Blog\/?cat=75"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2017\/10\/comet20171025-161.gif?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":19995,"url":"https:\/\/hobbyspace.com\/Blog\/?p=19995","url_meta":{"origin":16294,"position":4},"title":"The Space Show this week – Oct.21.2019","author":"TopSpacer","date":"October 21, 2019","format":false,"excerpt":"The guests and topics of discussion on The Space Show this week: 1. Monday, Oct. 21, 2019; 7 PM PDT (9 pm CDT; 10 PM EDT): We welcome Dr. Jose V. Lopez to discuss his paper regarding Planetary Protection in which he suggests we should be spreading Earthly molecules throughout\u2026","rel":"","context":"In "Activism"","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"The Space Show - David Livingston","src":"https:\/\/i0.wp.com\/hobbyspace.com\/Blog\/wp-content\/uploads\/2016\/09\/moonrise1-300x158.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":23538,"url":"https:\/\/hobbyspace.com\/Blog\/?p=23538","url_meta":{"origin":16294,"position":5},"title":"The Space Show this week – Feb.8.2021","author":"TopSpacer","date":"February 8, 2021","format":false,"excerpt":"The guests and topics of discussion on The Space Show this week: 1. Monday, Feb. 1, 2021; 7 pm PDT (9 pm CDT, 10 pm EDT: No program today. 2. Tuesday, Feb. 2, 2021; 7 pm PDT (9 pm CDT, 10 pm EDT): No program today due to medical needs.\u2026","rel":"","context":"In "Activism"","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"","src":"\/\/ir-na.amazon-adsystem.com\/e\/ir?t=hobbyspace&l=am2&o=1&a=0358278147","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16294","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=16294"}],"version-history":[{"count":1,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16294\/revisions"}],"predecessor-version":[{"id":16297,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/16294\/revisions\/16297"}],"wp:attachment":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16294"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16294"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16294"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}