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Posted by Muhammad523 3 hours ago

The NASA/ESA Mars Sample Return mission has been canceled(www.science.org)
207 points | 153 commentspage 2
ortusdux 2 hours ago|
I think the original plan was to land another rover, which would drive to each sample. I hope future plans weight the use of helicopters for retrieval after Ingenuity's success. It looks like the sample capsules weigh less than 3oz.
zokier 1 hour ago|
Using helicopters was in the plan already, e.g. https://en.wikipedia.org/wiki/Mars_Sample_Recovery_Helicopte...
Aboutplants 2 hours ago||
For better or worse it won’t be long until we get private exploration for minerals and water on the Moon and nearby planets, at a relatively decent scale (in comparative terms)
Rover222 37 minutes ago||
Please explain the "worse" part. Should we be in a moral panic about lifeless barren chunks of rock being put to some use?
mrguyorama 1 hour ago||
What could possibly fund the private exploration of minerals or water on the Moon or planets?

Which of the 180ish elements would possibly be found on a foreign body in enough scale that couldn't possibly be found, made, or replaced by cheaper means here on earth?

Space mining doesn't make sense! We can't even justify exploiting all known resources here on earth itself because they aren't profitable, how do you work those numbers when, instead of literal slave labor, you have to pay the energy cost of going up and then back down for every kilo of matter?

If it's often not worth it to mine literal gold here on earth because it can't be profitably extracted, the core limit on gold mines as an investment and business venture, why would it be profitable to, for example, mine that gold on Mars and try to bring it home?

Muhammad523 2 hours ago||
The James Webb Space Telescope had a $10 dollar price tag, why wasn't it considered too expensive at the time?
wmf 2 hours ago|
Costs increased after it was already under construction so sunk costs kicked in. MSR was still in the planning stages when it was canceled.
NooneAtAll3 1 hour ago||
MSR was in planning stages *and already* had budget overruns big enough to cancel lunar rover

That cancelled program became famous for leaving behind an already bought launcher that now will fly mass simulator

CrankyBear 1 hour ago||
This article is nine months old.
throw0101c 2 hours ago||
Howtown had a video on this a few weeks ago:

* https://www.youtube.com/watch?v=zvCgC1yA7_w

ckemere 1 hour ago||
Has anyone seen broader reporting on the rest of the science budget?
whalesalad 3 hours ago||
My brother in law (JPL) was telling me about this earlier in August. Big letdown but he assured me that they'll come back to earth some day ... just gonna sit up there a long time.
ckemere 1 hour ago||
Any news since January???
jmyeet 1 hour ago||
I'm surprised nobody has mentioned this but one reason not to do this mission is that we have ~400 Martian samples from meteors found on Earth [1]. The fact that there's even 1 is kind of amazing to me. And this has been confirmed by multiple methods including analyzing the air bubbles trapped in the rock matching Mars's atmosphere.

Flying to Mars and then flying back is incredibly complicated and much more expensive. Rather than sending an exploratory rover or a satellite, you have to basically send an entire launch vehicle when we've never launched anything into orbit from Mars before. And it has to operate essentially autonomously (for the launch).

Even missions to get samples from comets and asteroids are far less complicated because you're not dropping into a gravity well with just enough atmosphere to cover all your stuff in dust but not enough for atmospheric braking. Mars has the exact wrong amount of atmosphere.

Obviously samples returned from Mars would be better but it diminishes the value when we already have samples here. So the huge price tag and incredible engineering complexity becomes harder to justify.

[1]: https://www.nhm.ac.uk/discover/martian-meteorites-rare-visit...

Waterluvian 1 hour ago|
> we have ~400 Martian samples from meteors found on Earth

We have Mars rocks at home.

> Obviously samples returned from Mars would be better

The Mars rocks at home.

Muhammad523 1 hour ago||
The martian samples from meteors found on Earth aren't as good as the samples we'd get from a Mars Sample Return Mission because they have been in contact with stuff like water, air and who knows what else
ck2 1 hour ago|
don't boo, vote

I was holding my breath for Nancy Grace Roman Space Telescope which amazingly wasn't cancelled but they did cancel its successor, the Habitable Worlds Observatory Space Telescope which would be able to spot earth-sized exo-planets

even though Congress already funded it, because somehow the executive is allowed to illegally pocket veto Congress over and over again past two years

it's all Heritage Foundation and Russell Vought, he has no use for science and education

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