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Chang'e 5 sample return mission
Phil Stooke
post Dec 4 2020, 10:34 PM
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http://lroc.sese.asu.edu/posts/1172

Quick work! LRO views CE5.

Phil


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kymani76
post Dec 4 2020, 10:59 PM
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Attached Image


An update to my yesterday's "comic book" map of the landing with some corrections. Coordinates are from LRO Quickmap position, no yet updated to values derived from new LROC image.
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Marcin600
post Dec 5 2020, 01:49 AM
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Close-up of the sampling arm from the "second panorama".

As it is equipped with two different digging heads (in case of hitting a substrate of various degrees of hardness), I think that both of them have been tried. So perhaps two different types can be distinguished among the six trenches in the pictures (?)
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Bill Harris
post Dec 5 2020, 04:18 AM
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Thanks, Phil. That paper will be helpful. China is advancing the exploration or the Moon with their lander missions. They may well be the science leaders in this century.
This sample-return strategy is a brilliant innovation to confirm what the remote sensing suggests. It will be interesting to see what the analyses of this sample show.

--Bill


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Phil Stooke
post Dec 5 2020, 07:34 AM
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Marcin600: "As it is equipped with two different digging heads (in case of hitting a substrate of various degrees of hardness), I think that both of them have been tried. So perhaps two different types can be distinguished among the six trenches in the pictures (?) "

In my composite of sampling events, I think '1' is the rotating sampler trench and the other markings are from the shovel-type scoop. but looking closely there seem to be other rotating sampler trenches among the scoop trenches... I'm not being very clear but I hope you get what I mean.

Phil


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Marcin600
post Dec 5 2020, 02:02 PM
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QUOTE (Phil Stooke @ Dec 5 2020, 08:34 AM) *
Marcin600: "As it is equipped with two different digging heads (in case of hitting a substrate of various degrees of hardness), I think that both of them have been tried. So perhaps two different types can be distinguished among the six trenches in the pictures (?) "

In my composite of sampling events, I think '1' is the rotating sampler trench and the other markings are from the shovel-type scoop. but looking closely there seem to be other rotating sampler trenches among the scoop trenches... I'm not being very clear but I hope you get what I mean.

Phil


Got it, Phil. Thanks for the clarification.
Unfortunately, I don't have such a "trained eye" as you to notice these additional rotating sampler trenches among the scoop trenches sad.gif
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Marcin600
post Dec 5 2020, 04:42 PM
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I haven't noticed this before, but in this image (from here) you can see lunar soil samples on the "shovel":
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kenny
post Dec 5 2020, 04:52 PM
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The flag "planted" on the Moon by Chang'e 5 is, as it appears to closer scrutiny of photo, a little "pop-up" device.
An L-shaped support holds a semi-rigid flag.

Animation on this post shows how it works, complete with shaky reverberations.

CGTN news story - raising the flag
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nogal
post Dec 5 2020, 05:12 PM
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Looking at the landing sites of the Chang'e missions it struck me they're all in an area close to the center of a triangle defined by three small craters...
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I know there are maaany craters on the Moon but ... could this be a characteristic of the landing algorithm?
Fernando
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threadworm
post Dec 5 2020, 05:48 PM
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I lurk more than I post, but I wanted to congratulate everyone here on some of the excellent sleuthing and reporting on this mission - it's been very illuminating!

I wanted to add something that was raised by a rebuttal video to a conspiracy theorist about the mission. The original claim was pointless and irrelevant, but the rebuttal pointed out the movement of some of the rocks during the landing sequence as they are disturbed by the descent engine. I did a quick overlay animation from a couple of the available frames to show the surface disturbance - apologies if anyone else has already mentioned it!


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kenny
post Dec 5 2020, 06:10 PM
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Chang'e 5 lunar orbit docking in progress, according to China space watcher "Rocket Gyan".
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Phil Stooke
post Dec 5 2020, 09:46 PM
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Andrew Jones reports success!

Phil


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... because the Solar System ain't gonna map itself.

Also to be found posting similar content on https://mastodon.social/@PhilStooke
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NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain)
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kenny
post Dec 5 2020, 10:05 PM
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Fantastic result! The first lunar lift-off in 44 years, followed by the first-ever automatic (uncrewed) docking beyond Earth orbit.
The last docking in lunar orbit was 48 years ago this month, during Apollo 17, but that was between two manned craft.
All kudos to China! Surely the next steps homewards will be a little easier...
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kenny
post Dec 5 2020, 10:11 PM
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And the lunar samples have been transferred to the Earth return vehicle...

Xinhua docking report
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Bill Harris
post Dec 5 2020, 11:58 PM
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And from a related story in Kenny's Flag Raising link:

The Docking

https://news.cgtn.com/news/2020-12-06/China...jEpq/index.html


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