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Old 01-12-2019, 08:31 AM   #16
rodion_herrera
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Default Landing Site Location, and current position of lander and YUTU-2

Took a while to figure this out, but I did.

I finally located the *exact* landing spot of Chang'e-4, after analyzing the recently released landing video. The image below is taken from the LROC WMS site, using using higher resolution NAC overlay. The exact landing spot is in the center of the green dashed circle, with the coordinates of latitude -45.456, and longitude of 177.588 (see info box on the left side).

Why do I know this? I analyzed the Chang'e-4 landing video, and I realized the difficulty I had before was because the orbital path of the lander (at the far side) was actually NORTH to SOUTH! So I basically downloaded the video, and turned it UPSIDE DOWN and watched it this way, while looking at the LROC WMS for familiar patterns, and I found it...check the 2nd photo... this shows landing approach, and if you watch the video again, you'll see that the lander will land on that cluster of craters, the pattern of which matches the LROC WMS NAC image.

Remember, if you watch the video again, it's all UPSIDE DOWN with reference to the LROC images of the area, due to the fact that the lander was coming into Von Karman from the north to the south!

Landing site analysis vis-a-vis the panoramic shot. Note encircled craters and match them with the encircled craters in the (partial) panoramic image. CHG is the position of the lander, then the green dotted line to "1" is the initial curved path of YUTU-2 rover which can be seen in the panoramic shot. The sky blue path to "2" is the later path of the rover to its (possible) present location, based on the recent "taking photos of each other" images recently released by the Chinese space agency. Note that YUTU-2's position at "2" has a small crater in the background. That tiny crater is also visible on the first image that shows the landing site.

I also took into account the Sun/shadow angles and they do correspond with the approx. time these images were captured, based on coordinates of the lander on the lunar surface.

-RODION
Attached Thumbnails
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Last edited by rodion_herrera; 01-12-2019 at 08:33 AM.
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Old 01-12-2019, 10:51 AM   #17
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Chang'e-4: China Moon probes take snaps of each other
By Paul Rincon
Science editor, BBC News website
11 January 2019
https://www.bbc.co.uk/news/science-environment-46836047

Nice pics.
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Old 01-15-2019, 09:25 AM   #18
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Seeds taken up to the Moon by China's Chang'e-4 mission have sprouted, says China National Space Administration.
It marks the first time any biological matter has grown on the Moon, and is being seen as a significant step towards long-term space exploration.
https://www.bbc.co.uk/news/world-asia-china-46873526
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Old 01-15-2019, 10:47 AM   #19
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I wonder if NASA or ESA would be "bold" enough to carry biological samples to the Moon.
They now have "planetary protection" guidelines to prevent "contamination".
Scientific mysticism at its best...
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Old 01-15-2019, 10:54 AM   #20
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The plants are in a sealed container on board the lander. The crops will try to form a mini biosphere - an artificial, self-sustaining environment.
On Tuesday, Chinese state media said the cotton seeds had now grown buds.


That's all we, need a fruit-fly/potatoe/cotton hybrid.


N.
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Old 01-15-2019, 12:21 PM   #21
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Originally Posted by 4throck View Post
 They now have "planetary protection" guidelines to prevent "contamination".
Scientific mysticism at its best...
Of course, its easier to measure deadly fever, if you heat the thermometer first.

Or in other words: If you are interested in locating extraterrestrial amino acids or even microbiological life, bringing it their yourself is not helpful at all.

But if you are just going for propaganda, dropping the first corned beef sandwich on the moon is still an open achievement.
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Old 01-15-2019, 01:01 PM   #22
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I'm not sure any of those ingredients are in the Frey-Bentos product, though times move on.
As you probably know John Young got there first...

https://en.wikipedia.org/wiki/Corned...l_associations
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Old 01-15-2019, 02:01 PM   #23
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Scientific mysticism at its best...
It's got nothing to do with mysticism. It's merely a precaution that if they find any traces of life somewhere some day, they can be sure it's not just something they left behind.

Quote:
That's all we, need a fruit-fly/potatoe/cotton hybrid.
Great setup for a cheesy flick. Astronauts land on the moon to establish a base, get attacked and eaten one by one by a fruit-fly/potatoe/cotton hybrid monster that developed from an earlier biological experiment
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Old 01-15-2019, 02:03 PM   #24
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Originally Posted by jedidia View Post
 Great setup for a cheesy flick. Astronauts land on the moon to establish a base, get attacked and eaten one by one by a fruit-fly/potatoe/cotton hybrid monster that developed from an earlier biological experiment
Just wait until the scene in which kebab-fruit-bat-man saves them...
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Old 01-15-2019, 09:14 PM   #25
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Remember, Time Flys Like An Arrow, Fruit-Flies Like A Banana.

Always suspicious of that...

N.

Last edited by Notebook; 01-15-2019 at 09:18 PM. Reason: spelling/conjugation
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Old 01-16-2019, 09:12 PM   #26
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Strange, the 1980 version with Kurt Russell is on UK telly tonight. He's just lost a chess match to a computer, and a strange dog has arrived, chased by a helicopter...

Scary
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Old 01-17-2019, 07:40 AM   #27
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What are you talking about??
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Old 01-17-2019, 09:24 AM   #28
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Apologies, I left out the fact that the 1980's remake of "The Thing" was on UK tv last night.
Forgot that not all Orbinauts live here...

N.
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Old 01-17-2019, 03:05 PM   #29
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Originally Posted by Notebook View Post
 Apologies, I left out the fact that the 1980's remake of "The Thing" was on UK tv last night.
Forgot that not all Orbinauts live here...

N.

Yes, but some of us have been known to drink.
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Old 05-15-2019, 09:14 PM   #30
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The Chinese Chang'e-4 rover may have confirmed a longstanding idea about the origin of a vast crater on the Moon's far side.
The rover's landing site lies within a vast impact depression created by an asteroid strike billions of years ago.
Now, mission scientists have found evidence that impact was so powerful it punched through the Moon's crust and into the layer below called the mantle.
Chang'e-4 has identified what appear to be mantle rocks on the surface.
It's something the rover was sent to the far side to find out.
https://www.bbc.co.uk/news/science-environment-48285503
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