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Mars Reconnaissance Orbiter views Schiaparelli landing site

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Re: Mars Reconnaissance Orbiter views Schiaparelli landing site

#51
post #34

Earlier quoted context omitted.

Opportunity tried to see the descent, but it did not work: http://www.planetary.org/blogs/emily-lakdawalla/2016/1019152...

Damn. So cosmic rays are pretty intense huh?

Yes. Cosmic rays are a significant obstacle to any kind of automated event detection in imagery taken from space, especially outside low Earth orbit.

That streak was a classic CR. Depending on the angle of incidence on the CCD, you can see different shapes.

Re: Mars Reconnaissance Orbiter views Schiaparelli landing site

#52

Earlier quoted context omitted.

I'm waiting for the day where someone can tell their rover to drive / fly over and find out what the heck happened.

We have proven designs for Mars rovers, and a proven delivery system. The R&D has been done, the infrastructure is in place - why don't we send some more? We should be able to make incremental updates and constantly improve the rovers capabilities.

different hardware for different types of mission / cost

Re: Mars Reconnaissance Orbiter views Schiaparelli landing site

#53

What a shame. The only consolation, if any, is that they are not the first ones to crash on Mars. If I remember correctly the historic chances of landing successfully on Mars is about 50/50.

Reminds of the "Seven Minutes of Terror" video that NASA put out ahead of the Curiosity landing explaining how they intended to make it safely to the surface. https://www.youtube.com/watch?v=Ki_Af_o9Q9s (Note: I get goosebumps every time I watch this, absolutely amazing problem solving.)

I actually laughed the first time I saw it because it looked so much like a Goldberg machine... But it cost 500M$... And they only got one try.

Re: Mars Reconnaissance Orbiter views Schiaparelli landing site

#55

Earlier quoted context omitted.

I'm waiting for the day where someone can tell their rover to drive / fly over and find out what the heck happened.

Opportunity is not so far (it's actually inside a crater nearby I think), but it'd take months to get to place, and there may not be enough scientific value in doing so just to see the charred remains of Schiaparelli. But who knows, it's so over it's expected mission life that maybe someone goes "f * it, let's go take a look".

Opportunity is very very far, yes technically it is close if you are thinking about traditional modes of transportation, but it traveled so far only about 40KM, and it's max speed is about 2 inches per second it is not going to get there.

Re: Mars Reconnaissance Orbiter views Schiaparelli landing site

#56

Earlier quoted context omitted.

I'm waiting for the day where someone can tell their rover to drive / fly over and find out what the heck happened.

We have proven designs for Mars rovers, and a proven delivery system. The R&D has been done, the infrastructure is in place - why don't we send some more? We should be able to make incremental updates and constantly improve the rovers capabilities.

That's pretty much what we have done: http://imgur.com/3Hg9O (Pathfinder, Spirit/Opportunity, Curiosity). Mars2020 isn't designed yet, but it will be based on Curiosity.

Re: Mars Reconnaissance Orbiter views Schiaparelli landing site

#57
post #45

Earlier quoted context omitted.

We have proven designs for Mars rovers, and a proven delivery system. The R&D has been done, the infrastructure is in place - why don't we send some more? We should be able to make incremental updates and constantly improve the rovers capabilities.

The rovers we sent cost us about $400 million each. And one failed. https://en.wikipedia.org/wiki/Mars_Exploration_Rover

Considering that both rovers were planned to last for 90 days each both of them outlasted their mission like a boss you can't say any of them failed, yes Spirit has failed but after 2269 days in operation.

Opportunity by this time must be fueled by some dark magic since the darn thing out lasted it's planned mission by freaking 12 years.

Re: Mars Reconnaissance Orbiter views Schiaparelli landing site

#58
post #21

Earlier quoted context omitted.

I'm still amazed that it succeeded. I was prepared to bet quite a bit of money that at least one of the many quite complicated stages of the landing would fail. I'm happy I was wrong.

To me, the air bags[1] used to land the Spirit and Opportunity rovers seemed like a saner way to go than trying to deposit them gently directly on to the surface using a sky crane. The reported reason the sky crane was used for Curiosity is that it was too heavy for the air bag approach. [1] - https://www.youtube.com/watch?v=XRCIzZHpFtY

It's 185 kg vs 899 kg. I am already a bit surprised that it worked to land Spirit and Opportunity, but the lower gravity probably helps.

Re: Mars Reconnaissance Orbiter views Schiaparelli landing site

#60
post #45

Earlier quoted context omitted.

The rovers we sent cost us about $400 million each. And one failed. https://en.wikipedia.org/wiki/Mars_Exploration_Rover

Considering that both rovers were planned to last for 90 days each both of them outlasted their mission like a boss you can't say any of them failed, yes Spirit has failed but after 2269 days in operation. Opportunity by this time must be fueled by some dark magic since the darn thing out lasted it's planned mission by freaking 12 years.

https://xkcd.com/1504/
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