Videos: Chang’e-4 on the Moon + OSIRIS REx orbits Bennu + New Horizons passes Ultima Thule

The new year is off to a very impressive start in space science:

** China’s Chang’e 4 spacecraft landed on the far side of the moon. (See posting here.)

** OSIRIS REx successfully orbited Bennu, the smallest body ever orbited by a spacecraft. (See posting here) – NASA’s OSIRIS-REx Spacecraft Enters Close Orbit Around Bennu, Breaking Record – OSIRIS-REx Mission

Now, the spacecraft will circle Bennu about a mile (1.75 kilometers) from its center, closer than any other spacecraft has come to its celestial object of study. (Previously the closest orbit of a planetary body was in May 2016, when the Rosetta spacecraft orbited about four miles (seven kilometers) from the center of the comet 67P/Churyumov-Gerasimenko.) The comfortable distance is necessary to keep the spacecraft locked to Bennu, which has a gravity force only 5-millionths as strong as Earth’s. The spacecraft is scheduled to orbit Bennu through mid-February at a leisurely 62 hours per orbit.

Now that the OSIRIS-REx spacecraft is closer to Bennu, physical details about the asteroid will leap into sharper focus, and the spacecraft’s tour of this rubble pile of primordial debris will become increasingly detailed and focused.

In 2020, OSIRIS-REx will come down onto the surface of Bennu and grab a sample of regolith. The sample will be returned to Earth in 2023.

** New Horizons flew past Ultima Thule, the most distant object ever targeted by a space mission. (See posting here.) New Ultima Thule Discoveries from NASA’s New Horizons – New Horizons. Here is a press briefing held on Thursday:

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Scott Manley reviews the three heroic missions:

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Chasing New Horizons: Inside the Epic First Mission to Pluto

China’s Chang’e-4 spacecraft lands on lunar far side

China has successfully placed its Chang’e-4 spacecraft onto the surface of the far side of the Moon. It appears that the rover has also been released. This is the first time that any spacecraft has landed on the lunar far side.

The first image taken by the Chang’e-4 spacecraft of its landing spot on the lunar far side.

The craft landed in the Von Kármán crater in the South Pole-Aitken Basin. and is able to communicate with earth using the Queqiao relay satellite, which was launched in May of 2018. The mission will look for clues to the geologic structure and history of the Moon: Chang’e-4 spacecraft – Science Magazine

Chang’e-4 was launched on 8 December 2018 from the Xichang Satellite Launch Center in Sichuan province. The landing site is in the Von Kármán crater in the South Pole-Aitken Basin. The basin was likely formed by a giant asteroid impact that might have brought material from the moon’s upper mantle to the surface; studying samples taken there might offer scientists the chance to learn more about the composition of the body’s interior. The moon’s far side has a much thicker, older crust and is pockmarked by more and deeper craters than the near side, where large dark plains called maria, formed by ancient lava flows, have erased much of the cratering. Chang’e-4’s observations could give clues to the processes behind the differences.

And there are also instruments to carry out astronomical, solar, and biological research:

The lander carries cameras for observations of the terrain and a low-frequency spectrometer to study solar bursts. The rover has a panoramic camera, a spectrometer for identifying surface materials, and a ground-penetrating radar to probe subsurface structures. Sweden, Germany, the Netherlands, and Saudi Arabia contributed payloads that will measure radiation and use low-frequency radio astronomy to listen for faint signals lingering in the cosmos since the formation of the universe’s first stars, among other things. The lander also carries a minuscule biosphere developed by Chinese universities that will study the low-gravity interaction of a number of plants and silkworms.

This video shows various aspects of the Chang’e’4 mission with a mix of animations and real imagery:

The lander has a radioisotope thermoelectric generator (RTG) that will provide power for a mission that aims to last at least three months. A RTG is needed to keep the lander alive and active during the 2-week long cold nights when no solar power is available.

Deployment of the Yutu-2 rover. (Via Weibo.com)

More about Chang’e-4:

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Einstein’s Monsters: The Life and Times of Black Holes

New Horizons images begin to unveil Ultima Thule

Higher resolution images of the Kuiper Belt object Ultima Thule have now been transmitted from the New Horizons probe (see earlier postings here and here). On Wednesday the New Horizons project released the following:

NASA’s New Horizons Mission Reveals Entirely New Kind of World
Images of the Kuiper Belt object Ultima Thule unveil
the very first stages of solar system’s history

This image taken by the Long-Range Reconnaissance Imager (LORRI) is the most detailed of Ultima Thule returned so far by the New Horizons spacecraft. It was taken at 5:01 Universal Time on January 1, 2019, just 30 minutes before closest approach from a range of 18,000 miles (28,000 kilometers), with an original scale of 459 feet (140 meters) per pixel. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

Scientists from NASA’s New Horizons mission released the first detailed images of the most distant object ever explored — the Kuiper Belt object nicknamed Ultima Thule. Its remarkable appearance, unlike anything we’ve seen before, illuminates the processes that built the planets four and a half billion years ago.

“This flyby is a historic achievement,” said New Horizons Principal Investigator Alan Stern of the Southwest Research Institute in Boulder, Colorado. “Never before has any spacecraft team tracked down such a small body at such high speed so far away in the abyss of space. New Horizons has set a new bar for state-of-the-art spacecraft navigation.”

The new images — taken from as close as 17,000 miles (27,000 kilometers) on approach — revealed Ultima Thule as a “contact binary,” consisting of two connected spheres. End to end, the world measures 19 miles (31 kilometers) in length. The team has dubbed the larger sphere “Ultima” (12 miles/19 kilometers across) and the smaller sphere “Thule” (9 miles/14 kilometers across).

The first color image of Ultima Thule, taken at a distance of 85,000 miles (137,000 kilometers) at 4:08 Universal Time on January 1, 2019, highlights its reddish surface. At left is an enhanced color image taken by the Multispectral Visible Imaging Camera (MVIC), produced by combining the near infrared, red and blue channels. The center image taken by the Long-Range Reconnaissance Imager (LORRI) has a higher spatial resolution than MVIC by approximately a factor of five. At right, the color has been overlaid onto the LORRI image to show the color uniformity of the Ultima and Thule lobes. Note the reduced red coloring at the neck of the object. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

The team says that the two spheres likely joined as early as 99 percent of the way back to the formation of the solar system, colliding no faster than two cars in a fender-bender.

“New Horizons is like a time machine, taking us back to the birth of the solar system. We are seeing a physical representation of the beginning of planetary formation, frozen in time,” said Jeff Moore, New Horizons Geology and Geophysics team lead. “Studying Ultima Thule is helping us understand how planets form — both those in our own solar system and those orbiting other stars in our galaxy.”

Data from the New Year’s Day flyby will continue to arrive over the next weeks and months, with much higher resolution images yet to come.

“In the coming months, New Horizons will transmit dozens of data sets to Earth, and we’ll write new chapters in the story of Ultima Thule — and the solar system,” said Helene Winters, New Horizons Project Manager.

The Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, designed, built and operates the New Horizons spacecraft, and manages the mission for NASA’s Science Mission Directorate. The Southwest Research Institute, based in San Antonio, leads the science team, payload operations and encounter science planning. New Horizons is part of the New Frontiers Program managed by NASA’s Marshall Space Flight Center in Huntsville, Alabama.

Follow the New Horizons mission on Twitter and use the hashtags #UltimaThule, #UltimaFlyby and #askNewHorizons to join the conversation. Live updates and links to mission information are also available on http://pluto.jhuapl.edu and www.nasa.gov.

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Chasing New Horizons: Inside the Epic First Mission to Pluto

Spaceflight roundup – Jan.2.2019

A sampling of items about the state of space development in the past year and in the coming year(s):

** Bob Zimmerman reviews the global rocket launch pace in 2018 and discusses the outlook for the new year: The 2018 global launch race plus predictions for 2019 | Behind The Black.

The most significant achievement in 2018 is clearly China’s rise as a space power. That nation had predicted it would complete 40 launches in 2018. That prediction turned out to be largely accurate. China completed 38 successful rocket launches, almost doubling its previous yearly launch record. It also fixed the issues with their biggest rocket, the Long March 5, laying the groundwork for the launch of their own space station. In addition, they launched Chang’e-4 to the Moon, aimed at being the first spacecraft to land softly on the Moon’s far side. While this is not their first lunar lander/rover, it likely initiates a much more aggressive and fast-paced planetary program for the coming years.

** Indian has set a goal of putting three astronauts into orbit by 2022: India is Going to be Sending Three People to Space in Three Years – Universe Today

During a cabinet-level meeting that took place on Friday, Dec. 25th, the government of India announced that the Indian Space Research Organization‘s (ISRO) first crewed mission to space will consist of a three-astronaut team being sent to orbit. The government also announced that they had a approved a budget of $1.4 billion to fund the development of the requisite technology and infrastructure for the program.

The decisions to send astronauts to space was first announced by Prime Minister Narendra Modi on August 15th, during India’s Independence Day celebrations. At that time, Modi directed the ISRO to conduct a crewed mission to orbit by 2022, which would coincide with the 75th anniversary of India gaining its independence.

More about the Indian human spaceflight program:

** Tim “The Everyday Astronaut” Dodd reviews the space highlights of 2018:

** A review of the past year at TMRO.tv: 2018 Cosmic Wrapup – Orbit 11.50 – TMRO

** Emily Lakdawalla of the Planetary Society, “takes us on a tour of the spacecraft currently exploring from within our solar system. All planets and spacecraft locations are shown at their location for January 1st, 2019.”

** Virgin Orbit, one of many companies around the world developing small rockets to orbit small satellites,  highlights developments in 2018 that will lead to their first orbital flights in 2019:

** Writer Michael Belfiore‘s TEDx talk addresses the question, “Why Space Matters?”

 

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Telescopes and Binoculars at Amazon</p

New Horizons successfully flies by Ultima Thule & Brian May releases commemorative song

The New Horizons probe made a successful flyby of the Kuiper Belt object Ultima Thule today. (See earlier preview posting.) It will take several weeks for all of the high resolution images and data to be downloaded from the distant spacecraft. The first high-res flyby views will come out in a day or two. Today a blurry “pre-flyby” image was released: New Horizons Successfully Explores Ultima Thule: NASA Spacecraft Reaches Most Distant Target in History – JHAPL

At left is a composite of two images taken by New Horizons’ high-resolution Long-Range Reconnaissance Imager (LORRI), which provides the best indication of Ultima Thule’s size and shape so far. Preliminary measurements of this Kuiper Belt object suggest it is approximately 20 miles long by 10 miles wide (32 kilometers by 16 kilometers). An artist’s impression at right illustrates one possible appearance of Ultima Thule, based on the actual image at left. The direction of Ultima’s spin axis is indicated by the arrows. Credit: NASA/JHUAPL/SwRI; sketch courtesy of James Tuttle Keane

Here is a video of a briefing held today at Johns Hopkins University Applied Physics Lab (JHUAPL), which manages the NASA-funded project (the panel discussion starts at ~23:00):

The New Horizons team shares the first image of Ultima Thule, as well as updates on spacecraft status and flyby success, from the Mission Operations Center at Johns Hopkins Applied Physics Lab.

Panelists include Alan Stern, New Horizons principal investigator, Southwest Research Institute; Alice Bowman, New Horizons mission operations manager, Johns Hopkins Applied Physics Laboratory; Hal Weaver, New Horizons project scientist, Johns Hopkins Applied Physics Laboratory; Chris Hersman, New Horizons mission systems engineer, Johns Hopkins Applied Physics Laboratory.

The former Queen guitarist and professional astrophysicist Brian May was at JHUAPL for the event and he released a new song in honor of the New Horizons mission: Queen’s rock-star astrophysicist Brian May debuts anthem for a far-out trip – GeekWire

More about the flyby:

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Chasing New Horizons: Inside the Epic First Mission to Pluto

Everyone can participate in space