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#100
by
Jeff Lerner
on 08 Aug, 2012 17:30
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Radiation chat.
Chris, any characterization of what this level of radiation would mean for an astronaut on Mars
...probablly too early to comment...
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#101
by
Dappa
on 08 Aug, 2012 17:36
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Bedrock is pretty high up to be the floor of the crater. Guess is that it is a "rock" that formed some time after the crater. Do not know how hard the rock is, so rock in quotation marks.
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#102
by
Carreidas 160
on 08 Aug, 2012 17:37
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Heh. Hat tip to conspiracy theorists! Saying people might think NASA is pulling a fast one and that they put a rover out in the mojave desert. 
I was going to suggest the same
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#103
by
Chris Bergin
on 08 Aug, 2012 17:37
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The SkyCrane "crater".
This mission has seemingly moved on to the "it's a rock" phase.
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#104
by
Chris Bergin
on 08 Aug, 2012 17:41
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Radiation chat.
Chris, any characterization of what this level of radiation would mean for an astronaut on Mars ...probablly too early to comment...
Leo just asked that question!
Answer is it's complex and one of the more interesting questions. RAD will help design the shielding for HSF Mars missions.
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#105
by
Chris Bergin
on 08 Aug, 2012 17:45
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More notes that this landscape looks a lot like Earth, "it feels comfortable"
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#106
by
jcm
on 08 Aug, 2012 17:46
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Kelly Beatty fronting for me asking the entry timeline question :-) Thanks Kelly
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#107
by
Jeff Lerner
on 08 Aug, 2012 17:46
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Bedrock is pretty high up to be the floor of the crater. Guess is that it is a "rock" that formed some time after the crater. Do not know how hard the rock is, so rock in quotation marks.
One thing I've noticed from these early pictures is that the rover's wheels did not seem to sink into the surface at all...implies to me that the surface where MSL landed is quite hard....no dunes in sight a la MERs
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#108
by
Chris Bergin
on 08 Aug, 2012 17:47
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The ballast impacts are far away (and across a dune field they don't want to cross). So unlikely to check out those new holes.
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#109
by
Kaputnik
on 08 Aug, 2012 17:47
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Sounds like the ballast impacts will not be investigated- would have to traverse the dune field, and travel across areas where the stratigraphy is obscured.
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#110
by
Dappa
on 08 Aug, 2012 17:52
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Touchdown time: 05:17:57 UTC
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#111
by
jcm
on 08 Aug, 2012 17:53
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And the answer is 0517:57 UTC SCET, so the value we thought we heard on the SOL 0 thread (0514:39) was something else.
This is much more consistent with the expected timeline.
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#112
by
Chris Bergin
on 08 Aug, 2012 17:56
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So there will be that animation of landing in hi res in a day or so I believe!
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#113
by
Rocket Guy
on 08 Aug, 2012 17:57
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It wasn't heard wrong, that's what they said the other day (14:39). They have finally corrected it after being asked to, but not explained why they had it wrong.
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#114
by
Nathan
on 08 Aug, 2012 18:03
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Radiation chat.
Chris, any characterization of what this level of radiation would mean for an astronaut on Mars ...probablly too early to comment...
Leo just asked that question!
Answer is it's complex and one of the more interesting questions. RAD will help design the shielding for HSF Mars missions.
Looking at the graph though average radiation looks about half that of cruise- which is at least what one would expect from having a planet blocking half of the sky. Those peaks show that shielding of some kind is likely still required.
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#115
by
Jeff Lerner
on 08 Aug, 2012 18:09
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Radiation chat.
Chris, any characterization of what this level of radiation would mean for an astronaut on Mars ...probablly too early to comment...
Leo just asked that question!
Answer is it's complex and one of the more interesting questions. RAD will help design the shielding for HSF Mars missions.
Looking at the graph though average radiation looks about half that of cruise- which is at least what one would expect from having a planet blocking half of the sky. Those peaks show that shielding of some kind is likely still required.
So can we now cross off "unreasonable" radation levels on Mars for humans off the Mars Risk list
...I believe that was one of the major unknowns......
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#116
by
jcm
on 08 Aug, 2012 18:11
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It wasn't heard wrong, that's what they said the other day (14:39). They have finally corrected it after being asked to, but not explained why they had it wrong.
I'd have to listen to it again.
They said something was 1014:39 but maybe it wasn't rover touchdown
or maybe it wasn't PDT but some uncorrected telemetry counter value?
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#117
by
Hungry4info3
on 08 Aug, 2012 18:12
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So can we now cross off "unreasonable" radation levels on Mars for humans off the Mars Risk list ...I believe that was one of the major unknowns......
I'd be cautious crossing anything off the list if all we have is less than a week's worth of uncalibrated data.
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#118
by
ugordan
on 08 Aug, 2012 18:12
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Great view of the heatshield falling away, another full res frame that was downloaded from MARDI:
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#119
by
Blackstar
on 08 Aug, 2012 18:13
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So can we now cross off "unreasonable" radation levels on Mars for humans off the Mars Risk list ...I believe that was one of the major unknowns......
I'd be cautious crossing anything off the list if all we have is less than a week's worth of uncalibrated data.
Yes. Wait for publication in a peer-reviewed journal.
...probablly too early to comment...
