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Thread: China's Chang'e 4 mission

  1. #91
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    Quote Originally Posted by schlaugh View Post
    Uh....selv? You know that’s animation, right?
    You are correct. It was published on the of 2nd January
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  2. #92
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    Ex-astronaut Dr. Leroy Chiao, on "What China's moon landing means for US".

    https://edition.cnn.com/2019/01/07/o...iao/index.html

    China started out the year by doing something that no nation has done before: It landed a spacecraft and an accompanying rover on the far side of the moon with an ambitious scientific payload package and an exciting mission ahead to study the interior structure of the moon with the help of ground-penetrating radar, among other things.

    Almost equally impressive from a technical standpoint, China successfully placed a communication relay satellite into a lunar halo orbit to enable the command of, and communication with, both the spacecraft and rover, which do not have line-of-sight views of Earth for direct radio contact.

    I had mixed feelings about these events.
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  3. #93
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    "Why the Moon's far side looks red in new images".

    http://www.planetary.org/blogs/guest...ed-images.html

    The first ever images taken from the surface of the far side of the moon have been released following the Chinese National Space Administration’s (CNSA) successful landing there. The lander Chang'e 4 and rover Yutu 2 follow from Chang'e 3 and the original Yutu rover that were deployed on the moon’s near side in 2013.

    But if you’ve been looking closely at the pictures, you could be forgiven for thinking that the far side of the moon is red. That’s how it looks on the unprocessed pictures – and it’s different from other pictures of the moon, in which it appears grey. So what is going on?

    Cameras on spacecraft often don’t see colours in the same way as the human eye. For example, the red, green and blue components are usually recorded separately. This was the case with the latest images, and no colour correction has been applied to take account of the different sensitivities of each set of the camera’s colour detectors.
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  4. #94
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    The International payloads carried by Chang'e-4 have started operation. The interesting tit bit in the report to me, was that NASA and CNSA are cooperating on this mission

    http://www.xinhuanet.com/english/201..._137734090.htm

    NASA of the United States has also discussed cooperation in lunar and deep space explorations with CNSA. The two sides has collaborated on the study of the landing of the probe.

    NASA has offered the orbital data of its Lunar Reconnaissance Orbiter (LRO) and the Chinese side has provided the landing timing and location, it said.
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  5. #95
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    My thinking is that part of Jade Rabbit's mission is to find water ice, at which point China's man-on-the-moon program goes into high gear. IMHO.
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  6. #96
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    Quote Originally Posted by Roger E. Moore View Post
    My thinking is that part of Jade Rabbit's mission is to find water ice, at which point China's man-on-the-moon program goes into high gear. IMHO.
    We might have hints of that soon, as Yutu-2 has woken up from its siesta

    http://www.spacedaily.com/afp/190110....0lom8ses.html

    China's lunar rover got back to work on the far side of the moon Thursday after waking from a five-day hibernation, its official social media page announced.
    "Afternoon nap is over, waking up and getting moving," the Yutu-2 (Jade Rabbit-2) posted on the Twitter-like Weibo.

    The rover on Saturday went into standby mode to protect itself from temperatures reaching towards 200 degrees Celsius (390 degrees Fahrenheit), the China Lunar Exploration Program under the China National Space Administration (CNSA) said.

    The 140-kilogram (308-pound) rover has since resumed activities, which will include taking a picture of the front side of the lander and exploration missions.
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  7. #97
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    China has released 2 more pictures, taken after Yutu-2 woke up from its siesta.

    https://qz.com/1520927/chinas-change...oons-far-side/

    Today (Jan. 11), the Chinese Lunar Exploration Project (CLEP) office released two pictures on social network Weibo (link in Chinese) of the far side of the Moon, one a panoramic shot, the other a top-down projection of the same area. The picture was taken by the Chang’e-4 spacecraft, which consists of a lander and a rover named Yutu-2, which is equipped with tools like a lunar-penetrating radar to explore the Moon’s material composition. In the picture, the Chang’e-4 lander is behind the Yutu rover.
    The 360-degree panorama above was pieced together from 80 photos.

    http://www.xinhuanet.com/english/201..._137736587.htm

    One of the published images is a 360-degree panorama which was pieced together from 80 photos taken by a camera on the lander after the rover drove onto the lunar surface, according to Li Chunlai, deputy director of the National Astronomical Observatories of China and commander-in-chief of the ground application system of Chang'e-4.
    The next picture shows how far Yutu-2 has travelled to date.

    http://www.xinhuanet.com/english/201..._137736620.htm

    The screen at the Beijing Aerospace Control Center shows the Chang'e-4 lander (R) and the Yutu-2 rover taking pictures for each other, Jan. 11, 2019.
    Last edited by selvaarchi; 2019-Jan-11 at 10:53 AM.
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  8. #98
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    See a two minutes forty seconds video of Chang'e-4 landing.

    https://gbtimes.com/heres-the-amazin...de-of-the-moon

    China has released amazing footage of the descent of the Chang'e-4 spacecraft which shows the historic moment of the first landing on the far side of the Moon.

    The Chang'e-4 spacecraft touched down on the far side of the Moon, which never faces the Earth, at 02:26 UTC on January 3, deploying the Yutu-2 rover 12 hours later, but this is the first full footage we've seen of the landing.

    The footage comes from the descent camera which initially gives a view ahead of Chang'e-4 over the 186-km-diameter Von Kármán crater, which contains the preselected landing site.

    The video shows how, as the craft descends, it is extremely difficult to visually gain any sense of distance to the surface before the landing.

    Andrew Jones on the 1st photos returned from Chang'e-4.

    https://gbtimes.com/first-lunar-far-...hange-4-lander

    The first panoramic images from the Chang'e-4 lunar mission were released on Friday offering the first look at the horizon from within the Von Kármán crater on the far side of the Moon.

    The image was taken using the Terrain Camera (TCAM) on the 1,200 kg Chang'e-4 lander. The spacecraft made the first ever landing on the far side of the Moon, which never faces the Earth, on January 3.
    Last edited by selvaarchi; 2019-Jan-12 at 12:40 AM.
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  9. #99
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    Quote Originally Posted by schlaugh View Post
    Uh....selv? You know that’s animation, right?
    The article from Planetary Society has the actual video.

    http://www.planetary.org/blogs/jason...-4-update.html

    Everything is going well 9 days after China's Chang'e-4 mission made a historic landing on the far side of the Moon, the country's space program said today. On 6 January, the Yutu-2 rover started a planned midday nap to avoid overheating while the Sun was directly overhead. Yesterday, it woke up and continued exploring its surroundings. Additionally, a fresh batch of images and video are revealing more about the mission's landing site within Von Kármán crater.
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  10. #100
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    NASA's Lunar Reconnaissance Orbiter (LRO), locates Chang'e-4 on the moon.

    http://www.leonarddavid.com/nasa-moo...anding-locale/

    NASA Lunar Reconnaissance Orbiter (LRO) imagery has been used to further pinpoint the landing locale of China’s Chang’e-4 farside lander.

    Looking at the just released Chang’e-4 descent frames to the surface made it easy to find the exact landing spot in a Narrow Angle Camera image produced by the Lunar Reconnaissance Orbiter Camera, or LROC. That image was taken prior to the Chang’e-4’s touchdown, explains Mark Robinson, the principal investigator of the LROC at Arizona State University in Tempe.
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  11. #101
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    THis report is about Chang'e-4 role to monitor the temperature of the Luna day and night. It also contains a one liner about Russia's contribution to the mission.

    http://www.xinhuanet.com/english/201..._137740516.htm

    Tan Mei, a consultant for the probe from CAST, said Chang'e-4 will switch to a "sleep mode" during the lunar night due to the lack of solar power, and rely on the radioisotope heat source, a collaboration between Chinese and Russian scientists, to keep warm.
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  12. #102
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    A string of news releases on Chang'e-4. The 1st one by BBC of the rover and the lander taking pictures of each other.

    https://www.bbc.com/news/science-environment-46836047

    A Chinese rover and lander have taken images of each other on the Moon's surface.
    "Chief designer of Chang'e-4 on challenges, countermeasures of soft-landing on far side of Moon" in Mandarin.

    http://www.cctvplus.com/news/2019011...ml#!language=1

    Storyline

    China adopted two means to enable the soft landing of Chang'e-4 on the complicated terrain on the far side of the Moon, said the chief designer of the probe on Monday.

    Sun Zezhou told a media briefing in Beijing how China achieved soft-landing on the far side of the Moon.
    "China's new lunar rover faces challenges on moon's far side"

    http://www.xinhuanet.com/english/201..._137743699.htm

    China's second lunar rover Yutu-2 (Jade Rabbit-2), which is the first ever rover to drive on the moon's far side, will face considerable challenges brought by complicated terrain in its future exploration, said Chinese space experts on Monday.
    "China's lunar exploration program to meet goal of sample returning by 2020"

    http://www.cctvplus.com/news/2019011...ml#!language=1

    China's lunar exploration program will have met the goal of orbiting and landing on the Moon and bringing samples back to Earth by 2020, said an official with China National Space Administration (CNSA) on Monday.

    Wu Yanhua, deputy head of CNSA and deputy chief commander of China's lunar exploration program, made the statement at a press briefing on China's lunar exploration program in Beijing.

    "China's lunar exploration program will have achieved the three-step objective of 'orbiting, landing and sample returning' by 2020. Since the program was launched after being approved by the Communist Party of China (CPC) Central Committee and the State Council in 2004, we have achieved five continuous successes -- the Chang'e-1, Chang'e-2, Chang'e-3, a test craft for Chang'e-5, and Chang'e-4," said Wu.
    "China committed to international cooperation in space program"

    http://www.cctvplus.com/news/2019011...ml#!language=1

    China has always been committed to international cooperation in its space program, an official with China National Space Administration (CNSA) said in Beijing on Monday.

    Wu Yanhua, deputy director of CNSA, told reporters at a news briefing on the Chang'e-4 mission that it has involved a lot of international cooperation.

    Wu, who is also deputy head of China Lunar Exploration Program, said, "China has always followed the principle of openness and cooperation in its space programs. The Chang'e-4 probe is equipped with 13 payloads, four of which are in cooperation with Germany, Sweden, the Netherlands and Saudi Arabia. It also takes a lunar micro-satellite Longjiang."
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  13. #103
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    Andrew Jones report includes the information that the silkworms were replaced by fruit flies.
    https://gbtimes.com/change-4-cotton-...-space-program

    Previous, widespread reports state that silkworm cocoons would also be involved. According to Quartz, citing a December report from Guancha, the team was originally planning to send silkworm cocoons but later opted for fruit flies instead.

    The species selection was according to strict requirements due to the limited size of the payload and the extreme conditions of the lunar surface. The animal and plant species selected were required to be able to withstand large swings in temperatures and radiation.
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  14. #104
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    Night, night, Chang'e-4. Sweet dreams till January 28th.

    https://spacenews.com/change-4-space...s-cooperation/

    The Chang’e-4 lander and rover have powered down for a first lunar nighttime on the far side of the moon following a successful landing and first set of surface activities.

    Nighttime began over the landing site in Von Kármán crater within the South Pole-Aitken Basin late Jan. 13 UTC, bringing an end to the mission’s first daytime.

    With the use of a Russian-developed radioisotope thermoelectric generator —an upgrade on the previous Chang’e-3 lander and rover mission and prototype for future deep-space exploration—the Chang’e-4 lander will be able to run at a low level of activity and will take soil temperature measurements.

    The Yutu-2 rover meanwhile will have folded it its solar panels and entered a sleep mode, relying on a radioisotope heater unit for the 14-Earth-day long lunar nighttime, when temperatures will plunge well below -100 degrees Celsius (-148 Fahrenheit).

    The lander and rover will resume their science and exploration activities following sunrise early Jan. 28.
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