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Thread: Hayabusa 2 - Japan's sample return probe to asteroid 1999 JU3

  1. #91
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    Plans to land Hayabusa 2 on Ryugu at the end of this month have been put back to end January next year. Reason - Ryugu is, surface was more rugged than expected.

    https://www.channelnewsasia.com/news...icial-10816652

    A Japanese probe sent to examine an asteroid in order to shed light on the origins of the solar system will now land on the rock several months later than planned, officials said Thursday (Oct 11).

    The Japan Aerospace Exploration Agency (JAXA) told reporters the Hayabusa2 probe is now expected to touch down on the Ryugu asteroid in "late January" at the earliest, rather than at the end of this month as initially expected.

    JAXA project manager Yuichi Tsuda said they needed more time to prepare the landing as the latest data showed the asteroid surface was more rugged than expected.
    "The mission ... is to land without hitting rocks," Tsuda said, adding this was a "most difficult" operation.

    "We had expected the surface would be smooth ... but it seems there's no flat area."
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  2. #92
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    "Collecting a sample from asteroid Ryugu is going to be dicey".

    http://www.planetary.org/blogs/jason...ple-dicey.html

    The scientists and engineers behind Japan's Hayabusa2 mission are giving themselves more time to prepare for a hair-raising sample collection from asteroid Ryugu's surface.

    Hayabusa2 arrived at Ryugu in June, deployed three hopping rovers in September, and dropped a toaster-sized lander earlier this month. The spacecraft was scheduled to touch down on the asteroid and collect a sample later this month, but that has been delayed to early 2019 as Ryugu and Hayabusa2 prepare for solar conjunction, a roughly month-long blackout period where they are on the opposite side of the sun from Earth.

    "Once the angle between the spacecraft, Earth and Sun is less than about 6 degrees, the radio noise from the Sun interferes with communication too much to send a signal to Hayabusa2," said Elizabeth Tasker, an associate professor at the Japanese Aerospace Exploration Agency, JAXA. "As that angle shrinks even more, there is also a point where the Sun is physically in the way."

    JAXA officials say the delay will give them more time to study Ryugu's surface in preparation for touchdown, while learning more about the performance of their spacecraft.
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  3. #93
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    A one minute 40 seconds by BBC - "Asteroid pioneers: The team who put rovers on a space rock"

    https://www.bbc.com/news/av/technolo...n-a-space-rock

    The Hayabusa-2 spacecraft was launched by Japan’s space agency (Jaxa) in 2014.

    Three-and-half years later it reached its destination - the asteroid known as 162173 Ryugu.

    The 900m (2,950ft) wide space rock is thought to be left over from the early days of our Solar System and could provide clues about the origin and evolution of Earth.

    The spacecraft has since deployed rovers to explore the asteroid and will also land on the surface of Ryugu itself to collect samples, before taking off again.

    BBC Click’s Spencer Kelly meets the team behind the project to find out more.
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  4. #94
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    Ryugu and Bennu seem very similar...

  5. #95
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    After taking more than 200 pictures by the two rovers, no suitable smooth landing spot has been found to take samples.

    https://www.apnews.com/0cb50b5b7b1c499b8c12f7f0b315a721

    Japan’s space agency says more than 200 photos taken by two small rovers on an asteroid show no signs of a smooth area for the planned touchdown of a spacecraft early next year.

    The Japan Aerospace Exploration Agency said Thursday the two solar-powered rovers have become inactive and are probably in the shade, but are still responding to signals after three months, exceeding their projected life of several days.
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  6. #96
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    The similarities between Ryugu and Bennu are interesting considering they're dissimilar in size.

    Here's a brief comparison: https://www.space.com/42377-asteroid...ond-shape.html

  7. #97
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    Good to see you back!

  8. #98
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    We live in exciting times. We have right now two missions visiting two different asteroids with the aim of bringing to earth, samples of them. Hayabusa-2 will attempt to do so in a months time.

    http://www.planetary.org/blogs/jason...ollection.html

    Japan's Hayabusa2 spacecraft will try to collect a sample from asteroid Ryugu during the week of 18 February, mission officials said during a press briefing last week. Should problems arise, a backup week is available starting 4 March. The team is now considering two sample collection sites, the smaller of which is just a few meters across.
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  9. #99
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    The date of landing has been set. It is 22nd February.

    https://mainichi.jp/english/articles...0m/0na/024000c

    The Japan Aerospace Exploration Agency (JAXA) will try to land its Hayabusa 2 probe on the asteroid Ryugu on Feb. 22, the agency said on Feb. 6.

    In its landing mission, Hayabusa 2 will use target markers it released earlier on the celestial object, and attempt to collect rocks and sand from the surface and bring them back to Earth.
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  10. #100
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    "What to expect when Hayabusa2 collects a sample from Ryugu"

    http://www.planetary.org/blogs/jason...hayabusa2.html

    More than 4 years after launch and a half year surveying asteroid Ryugu in space, Japan's Hayabusa2 spacecraft is ready for its biggest moment yet: sample collection. The spacecraft is scheduled to touch down on Ryugu at 08:15 Japan time on 22 February (21 February 23:15 UTC, 18:15 EST). If all goes well, Hayabusa2 will gently touch Ryugu with its meter-long sample horn, fire a bullet made of tantalum into the surface, and capture the resulting cloud of dust and debris.

    JAXA plans to hold a press briefing at 15:00 Japan time on 20 February, and another just 3 hours before touchdown. It usually takes a couple of days for JAXA to translate press materials to English, so it may be difficult for non-Japanese speakers to find out more news before the big moment. The best way, then, to follow the mission is JAXA's Hayabusa2 English Twitter account, and of course, this guide!
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  11. #101
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    We have touch down Congratulations Japan

    https://www3.nhk.or.jp/nhkworld/en/news/20190222_27/

    The Japan Aerospace Exploration Agency, or JAXA, says its Hayabusa2 space probe has successfully landed on the asteroid Ryugu in its first attempt to collect rock samples there.

    JAXA says the spacecraft touched down on the asteroid at around 7:29 AM on Friday, Japan time.

    Hayabusa2 began its decent toward Ryugu a little after 1:00 PM on Thursday from an altitude of 20,000 meters, aiming for a small, six-meter-wide touchdown zone.

    The spacecraft switched to autonomous landing mode about 500 meters above the asteroid. It then used sensors to calculate its position and maneuver itself to the landing point.

    Hayabusa2 features a rock-collecting device about one meter long that extends from its bottom and comes in contact with the asteroid's surface. It is designed to fire bullets into the surface and gather the rocks that this stirs up.
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  12. #102
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    Here is video of the capture, and the debris spread around. No wonder there was a dark area .

    https://www.space.com/hayabusa2-aste...n=20190306-sdc

  13. #103
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    Jason Davis on the touch downs and future plans.

    http://www.planetary.org/blogs/jason...own-recap.html

    Hayabusa2 scored a near-perfect bulls-eye during its touchdown on Ryugu in February, according to a 5 March press briefing by JAXA officials. The mission is gearing up for more action-packed operations that include using explosives and a copper projectile to create a crater, and a possible second sample collection after that.
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  14. #104
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    CNN on "Japan asteroid probe in 'tantalizing' solar system discoveries".

    https://edition.cnn.com/2019/03/19/w...ntl/index.html

    An unmanned Japanese spacecraft orbiting an asteroid has made surprising discoveries that scientists say will improve understanding about the origin's of the Earth's water and help search for life in other solar systems.

    Scientists working on Japan's Hayabusa 2 space mission said that by using a wide range of cameras and instruments to collect images and data about the near-Earth asteroid Ryugu, they had made some "tantalizing discoveries."

    "The primary one being the amount of water, or lack of it, Ryugu seems to possess," said Seiji Sugita of the University of Tokyo's Department of Earth and Planetary Science in a press statement as the mission released its initial findings.
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  15. #105
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    "What to Expect When Hayabusa2 Blows a Hole in Asteroid Ryugu"

    http://www.planetary.org/blogs/jason...busa2-sci.html

    If you enjoyed the drama of Hayabusa2's sample collection touchdown, get ready for an even bigger fireworks display. The spacecraft is about to deploy an explosives-filled box that will detonate in space, fire a copper plate into Ryugu, and create a crater up to 10 meters wide. The moment of crater generation is set for 5 April at 02:36 UTC. Here's what to expect.
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  16. #106
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    "First Science Results from Hayabusa2 Mission"

    http://www.planetary.org/blogs/emily...e-results.html

    What a great week in Houston! With three missions reporting first science results, the celebration of the 50th anniversary of the Apollo 11 landing, and a host of ongoing science from across the solar system, it was intense and fun. For me, the most exciting results were the back-to-back sessions reporting on first looks at Bennu and Ryugu with OSIRIS-REx and Hayabusa2. Jason has already reported out OSIRIS-REx results, so I’ll tell you what the Hayabusa2 team had to say.
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  17. #107
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    "Hayabusa2 Safe and Sound after Dropping Explosives, Hiding behind Ryugu"

    http://www.planetary.org/blogs/jason...after-sci.html

    Hayabusa2 is safe and sound after successfully deploying its explosive-packed SCI experiment to create an artificial crater on Ryugu. JAXA confirmed the spacecraft also dropped off its DCAM3 imager before retreating behind Ryugu as planned. Hayabusa2 was receiving a signal from DCAM3 but images will not be available until later this afternoon Japan time on 5 April, at the earliest.
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  18. #108
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    NASA team in Japan to learn from the Japanese experience of landing on Hayabusa2.

    https://www3.nhk.or.jp/nhkworld/en/news/20190418_29/

    Scientists from the US space agency NASA have been given advice by Japanese researchers on landing a probe on a rocky asteroid.

    Ten members of NASA's asteroid probe team are visiting Japan. They met the Hayabusa2 project team at the Japan Aerospace Exploration Agency, or JAXA, this week.

    NASA is planning to land its OSIRIS-REx probe on the asteroid Bennu, which is more than 120 million kilometers from Earth, in July 2020.

    The NASA scientists aim to collect rock and sand samples from the asteroid. But they say it will be difficult to find a safe landing site because Bennu is covered with more boulders than they expected.

    The Hayabusa2 probe landed on the asteroid Ryugu in February in similar rocky conditions. The probe made a pinpoint landing in a target area with a diameter of about 6 meters.

    The Hayabusa2 team gave the NASA researchers advice on how to make a precision-guided landing of a spacecraft.
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  19. #109
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    Quote Originally Posted by selvaarchi View Post
    "Hayabusa2 Safe and Sound after Dropping Explosives, Hiding behind Ryugu"

    http://www.planetary.org/blogs/jason...after-sci.html
    We now have confirmation the explosives caused a crater on the astroid.

    https://mainichi.jp/english/articles...0m/0dm/095000c

    Japan's Hayabusa2 space probe has successfully created a man-made crater on an asteroid that altered the body's terrain in a historical first, the country's space agency said Thursday.
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  20. #110
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    Nasaspaceflight carries an article on Hayabusa2.

    https://www.nasaspaceflight.com/2019...sample-return/

    The Japanese asteroid sampling mission Hayabusa2 – launched on December 3, 2014 aboard an H-IIA rocket from Tanegashima, Japan – completed its long flight to asteroid Ryugu (formerly 1999 JU3) before – on September 21, 2018 – achieving the milestone of deploying its two tiny MINERVA-II robots/rovers, followed later by the deployment of the MASCOT lander, touched the surface itself – and has now a survey of a crater it created by dropping an impactor on to its surface.
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  21. #111
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    More information on Hayabusa2, that those of us that do not read Japanese missed, due to the news not being translate to English.

    http://www.planetary.org/blogs/jason...ci-update.html

    We already knew that Hayabusa2 successfully fired a copper plate into asteroid Ryugu, and that the spacecraft found the resulting crater on 25 April. Now, thanks to a newly translated JAXA press briefing, English speakers have a few more details about how the ambitious operation went.
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  22. #112
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    "Hayabusa2 Encounters Snag Trying to Drop Second Target Marker"

    http://www.planetary.org/blogs/jason...et-marker.html

    Japan's Hayabusa2 spacecraft aborted an attempt to drop a second target marker on the surface of asteroid Ryugu last week. The target marker was intended to guide the spacecraft during a possible second sample collection attempt.

    Hayabusa2 is healthy and has since returned to its 20-kilometer home position. JAXA overcame a similar abort last year by making some minor procedural changes, but the clock is ticking—Hayabusa2 only has about a month and a half left before Ryugu gets too hot for any more touchdowns.
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  23. #113
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    "Hayabusa2 drops second target marker, targets artificial crater for sample collection"

    http://www.planetary.org/blogs/jason...second-tm.html

    Japan's Hayabusa2 spacecraft has successfully dropped a second target marker on Ryugu. The reflective softball-sized sphere, which contains the names of Planetary Society members and other supporters, will give the spacecraft a visual guide if mission planners send it back to the surface to attempt a second sample collection.

    JAXA is now considering collecting the sample directly from the area where Hayabusa2 created an artificial crater in early April, thanks to updated imagery collected during an aborted touchdown marker drop attempt in mid-May.
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  24. #114
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    "Japan's Hayabusa2 spacecraft grabs epic close-up just 30 feet above asteroid"

    https://www.cnet.com/news/japans-hay...bove-asteroid/

    On May 30, the agency performed a daring maneuver which brought its spacecraft within 9 meters (approx. 30 feet) of Ryugu to drop a target marker on its surface. The success of the mission was documented by the spacecraft's official Twitter account (because it's 2019) but on June 5, images of the success were released by the agency -- and its photo is absolutely wild.
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  25. #115
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    Quote Originally Posted by selvaarchi View Post
    "Hayabusa2 drops second target marker, targets artificial crater for sample collection"

    http://www.planetary.org/blogs/jason...second-tm.html
    Wow - they dropped it only 3 meters off its mark. I would call that a bulls eye.

    https://mainichi.jp/english/articles...0m/0na/018000c

    A target marker released by Japan's Hayabusa2 space probe in late May to guide its landing onto the asteroid Ryugu fell just 3 meters away from the spot the probe was aiming for, the Japan Aerospace Exploration Agency (JAXA) said on June 11.
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  26. #116
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    "Japan’s Hayabusa2: Asteroid Probe – Should I Stay or Should I Go?"

    Their answer at the end of the article.

    http://www.leonarddavid.com/japans-h...r-should-i-go/

    “To go, or not to go, that is the question,” explain Japan’s Hayabusa2 officials.

    The spacecraft is ready to attempt a second touchdown on asteroid Ryugu.

    “Although the first touchdown was successful, going for a second touchdown is ‘the question’ because touchdown is a high-risk operation. This is especially true in the case of Ryugu, which has no large, flat areas. The spacecraft therefore needs precise control to avoid a collision in rocky locations. In short, just because we have succeeded in the past does not mean we can easily do so again.”
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  27. #117
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    They did land and gave us some photos as well.

    https://www3.nhk.or.jp/nhkworld/en/news/20190711_29/

    apan's space agency, JAXA, has released three photos taken by the space probe Hayabusa2 during its landing on the asteroid Ryugu in its unprecedented mission to collect underground samples.

    One of the photos released on Thursday, taken 4 seconds before touchdown, is a close-up of the asteroid's rocky surface.
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  28. #118
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    The Planetary Society on Hayabusa2 2nd touchdown.

    http://www.planetary.org/blogs/guest...touchdown.html

    Japan's Hayabusa2 spacecraft has touched down on Ryugu for a second time, bagging samples which hopefully contain material from the subsurface of the asteroid.

    A live webcast from JAXA's mission control room in Sagamihara showed operations in action and scenes of applause following the spacecraft’s successful, accurate setting down in area C01-Cb, close to an artificial crater generated by the SCI impact in April.

    Hayabusa2 touched down at 01:07 UTC with the signal confirming the good news reaching Earth at 01:20 UTC.
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  29. #119
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    "MASCOT Confirms What Scientists Have Long Suspected" remember MASCOT (Mobile Asteroid Surface Scout) which traveled with Hayabusa2 and landed on Ryugu).

    http://www.spacedaily.com/reports/MA...ected_999.html

    Ryugu and other asteroids of the common 'C-class' consist of more porous material than was previously thought. Small fragments of their material are therefore too fragile to survive entry into the atmosphere in the event of a collision with Earth. This has revealed the long-suspected cause of the deficit of this meteorite type in finds on Earth.

    Researchers at the German Aerospace Center (Deutsches Zentrum fuer Luft- und Raumfahrt, DLR) have come to this conclusion in a scientific paper published in the journal Nature Astronomy. The results are based on high-resolution measurements of the surface temperature with the DLR radiometer MARA on board the German-French Mobile Asteroid Surface Scout (MASCOT) lander. On 3 October 2018, as part of the Japanese Hayabusa2 mission, MASCOT descended onto the almost one-kilometre-diameter asteroid Ryugu and sent spectacular images and physical measurements from the surface back to Earth.
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