{"id":8152,"date":"2014-06-21T19:28:30","date_gmt":"2014-06-21T23:28:30","guid":{"rendered":"http:\/\/hobbyspace.com\/Blog\/?p=8152"},"modified":"2014-06-21T19:28:30","modified_gmt":"2014-06-21T23:28:30","slug":"gravity-in-orbit-is-never-zero","status":"publish","type":"post","link":"https:\/\/hobbyspace.com\/Blog\/?p=8152","title":{"rendered":"Gravity in orbit is never zero"},"content":{"rendered":"<p>An explanation of why the term &#8220;zero gravity&#8221; is misleading:\u00a0<a style=\"font-size: 14px;\" href=\"http:\/\/www.science20.com\/jeffrey_bennett\/zero_gravity_it_may_not_be_what_you_think-139015\" target=\"_d\">Zero Gravity: It May Not Be What You Think<\/a>.<\/p>\n<p>A couple of videos explaining the same thing starting with a short one:<\/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\/YxRCyokN3g8?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en&#038;autohide=2&#038;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>And then a longer one:<\/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\/NO5ppSpQQwc?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=en&#038;autohide=2&#038;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","protected":false},"excerpt":{"rendered":"<p>An explanation of why the term &#8220;zero gravity&#8221; is misleading:\u00a0Zero Gravity: It May Not Be What You Think. A couple of videos explaining the same thing starting with a short one: And then a longer one:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","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":[95,9],"tags":[],"class_list":["post-8152","post","type-post","status-publish","format-standard","hentry","category-micro-g-rd","category-science-and-technology"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p34aWK-27u","jetpack-related-posts":[{"id":3431,"url":"https:\/\/hobbyspace.com\/Blog\/?p=3431","url_meta":{"origin":8152,"position":0},"title":"Video: Drinking coffee in zero-gravity","author":"TopSpacer","date":"July 15, 2013","format":false,"excerpt":"The latest NASA ScienceCasts video deals with\u00a0 The Zero Gravity Coffee Cup: http:\/\/youtu.be\/nZYsOG60dKQ See also The zero gravity coffee cup - Science@NASA\/Phys.org. And there is the older video from 2008 with astronaut Don Pettit demonstrating the fluid actions in weightlessness and how the zero-g coffee cup works: http:\/\/youtu.be\/pk7LcugO3zg","rel":"","context":"In &quot;Living in Space&quot;","block_context":{"text":"Living in Space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=17"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/nZYsOG60dKQ\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":14226,"url":"https:\/\/hobbyspace.com\/Blog\/?p=14226","url_meta":{"origin":8152,"position":1},"title":"ZERO-G provide weightlessness for university research projects","author":"TopSpacer","date":"April 17, 2017","format":false,"excerpt":"ZERO-G sends the\u00a0 message below about university research projects flown on the companies Boeing 727 that provides periods of weightlessness by flying parabolic trajectories. ZERO-G Research Flights Advance Technology for Future Deep-Space Missions As Part of NASA\u2019s Flight Opportunities Program, Research Groups Tested Systems in Zero Gravity Crucial to Long-Term\u2026","rel":"","context":"In &quot;Education&quot;","block_context":{"text":"Education","link":"https:\/\/hobbyspace.com\/Blog\/?cat=22"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/IGtZASJ_Yj4\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":14867,"url":"https:\/\/hobbyspace.com\/Blog\/?p=14867","url_meta":{"origin":8152,"position":2},"title":"Videos: &#8220;Star Craft&#8221; with Loren Grush of The Verge","author":"TopSpacer","date":"September 5, 2017","format":false,"excerpt":"Loren Grush, who reports on spaceflight at The Verge, has started a video series called Star Craft. Here are the first set of shows: ** \"In the season premiere of our new show Space Craft, Loren Grush tries on innovative Mars and Moon space suits at the University of North\u2026","rel":"","context":"In &quot;Living in Space&quot;","block_context":{"text":"Living in Space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=17"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/R3O9TgZwMuE\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":10453,"url":"https:\/\/hobbyspace.com\/Blog\/?p=10453","url_meta":{"origin":8152,"position":3},"title":"Video: A cup of coffee in micro-g","author":"TopSpacer","date":"April 23, 2015","format":false,"excerpt":"I've had a posts here and here\u00a0recently about the\u00a0Zero Gravity Cocktail Glass from Cosmic Lifestyle. Here is an interesting NASA video with Dr. Mark Weislogel of Portland State University about the development of these types of beverage holders, as well as pipes and other fluid flow hardware, that use capillary\u2026","rel":"","context":"In &quot;Living in Space&quot;","block_context":{"text":"Living in Space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=17"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/Fttaf_rhpm4\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5012,"url":"https:\/\/hobbyspace.com\/Blog\/?p=5012","url_meta":{"origin":8152,"position":4},"title":"Gravity Untethered: Presented by Yuri&#8217;s Night","author":"TopSpacer","date":"October 22, 2013","format":false,"excerpt":"The\u00a0Yuri's Night - Google+\u00a0site is hosting\u00a0Gravity Untethered The first in a series of one-of-a-kind hangouts hosted by Yuri's Night. We'll be talking with some amazing experts in zero-gravity about the movie \"Gravity\" that came out a few weeks ago. Joining us will be Astronaut\u00a0+Ron Garan, Astronaut\u00a0+Cady Coleman\u00a0 JSC Physiologist+Liz Warren\u00a0,\u2026","rel":"","context":"In &quot;Activism&quot;","block_context":{"text":"Activism","link":"https:\/\/hobbyspace.com\/Blog\/?cat=3"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5070,"url":"https:\/\/hobbyspace.com\/Blog\/?p=5070","url_meta":{"origin":8152,"position":5},"title":"&#8220;Gravity&#8221; film: Getting the biology right + Commercial option missed + Google Hangout with astronauts et al","author":"TopSpacer","date":"October 25, 2013","format":false,"excerpt":"The very popular movie Gravity doesn't get the orbital mechanics right but Joel Achenbach thinks they did fine with the human part of the story :\u00a0\u201cGravity\u201d better on biology than orbital dynamics [spoilers] - Washington Post. === With the Space Shuttles now retired, the movie could have shown the astronauts\u2026","rel":"","context":"In &quot;Living in Space&quot;","block_context":{"text":"Living in Space","link":"https:\/\/hobbyspace.com\/Blog\/?cat=17"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/img.youtube.com\/vi\/6bCIuzokTQU\/0.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"_links":{"self":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/8152","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=8152"}],"version-history":[{"count":1,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/8152\/revisions"}],"predecessor-version":[{"id":8153,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/8152\/revisions\/8153"}],"wp:attachment":[{"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hobbyspace.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}