McCool Hill |
McCool Hill |
Mar 28 2006, 01:28 PM
Post
#31
|
|
Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
|
|
|
Mar 28 2006, 04:09 PM
Post
#32
|
|
XYL Code Genius Group: Members Posts: 138 Joined: 23-November 05 Member No.: 566 |
I was kind of hoping for a closer view, though. http://marsrovers.jpl.nasa.gov/gallery/all...C6P0605R0M1.JPG |
|
|
Mar 28 2006, 06:03 PM
Post
#33
|
|
Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
|
|
|
Mar 29 2006, 06:33 AM
Post
#34
|
|
Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
That's not quite the closer view I had in mind. I was kind of thinking along the lines of centsworth_II's nostalgic comment regarding the alternate paths that might have been taken. Where would we be if Spirit had taken the less arduous path around the hill to find the buried treasure. There is not a lot of value to be had from second guessing such decisions when exploring an alien world. We need to see what is around the next corner, if we can make it there. -------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
|
|
Mar 29 2006, 08:52 AM
Post
#35
|
|
Junior Member Group: Members Posts: 42 Joined: 31-March 05 From: Sofia, Bulgaria Member No.: 224 |
A view into the drive direction. Taken on Sol 792 with the L0 navcam. jvandriel Is this frost? If it is, can it do some dust cleaning? When the frost sublimates from the solar panel may be it can carry some dust particles with it? |
|
|
Mar 29 2006, 11:17 AM
Post
#36
|
|
Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
At 13:45:38 Mars local solar ? Not a chance. Remember the frost that Opportunity had - it vanished within hours of sunrise. It's a bad image stretch - that's just dust that's being bright.
Doug |
|
|
Mar 29 2006, 11:56 AM
Post
#37
|
|
Member Group: Members Posts: 593 Joined: 20-April 05 Member No.: 279 |
When the frost sublimates from the solar panel may be it can carry some dust particles with it? I'd be surprised, quite frankly. As the ice turns directly to water vapour I can't see it affecting the dust at all. These rovers need honest-to-goodness dreich Scottish weather. ;-) Andy G |
|
|
Mar 29 2006, 01:21 PM
Post
#38
|
|
Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
Jvandriel: ..."A view of the wheeltracks before and after the left turn"...
I'm afraid Spirit's been drinking again... and at such a tender age! |
|
|
Mar 29 2006, 02:24 PM
Post
#39
|
|
Senior Member Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 |
I'd be surprised, quite frankly. As the ice turns directly to water vapour I can't see it affecting the dust at all. These rovers need honest-to-goodness dreich Scottish weather. ;-) Andy G Andy: Nobody *needs* dreich Scottish weather. Now kindly explain the use of the 'd' word to the colonials! Bob Shaw -------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
|
|
|
Mar 29 2006, 04:54 PM
Post
#40
|
|
Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
OMG, google "dreich" and you come up with a whole new dialect of english. Too bad that the Brits and Welsh murdered it, but the Scots seem to have gotten creative, too.
http://www.rampantscotland.com/parliamo/bl...amo_weather.htm --Bill -------------------- |
|
|
Mar 30 2006, 03:33 AM
Post
#41
|
|
Member Group: Members Posts: 136 Joined: 13-October 05 From: Malibu, CA Member No.: 527 |
At 13:45:38 Mars local solar ? Not a chance. Remember the frost that Opportunity had - it vanished within hours of sunrise. It's a bad image stretch - that's just dust that's being bright. Doug My take as well, Doug. Dust! It's more likely that the 'frost' we saw before was composed of pure carbon dioxide - dry ice... with zero H2O involvement – no matter how much one might wish it were otherwise. With the low gravity of Mars, the atmosphere is decreasing at a high rate - increased geometrically by solar bombardment, which further accelerates the break up of heavier atmospheric molecules and resultant lighter-ion planetary escape - water vapor being the most vulnerable to such radiation break up. An aside, the idea that pools of surface water will be found on Mars is laughable. Liquid water cannot exist on Mars due to the fact that the atmospheric pressure (over ten times lower than that of earth – and getting lower) simply precludes the possibility. |
|
|
Guest_paulanderson_* |
Mar 30 2006, 06:57 AM
Post
#42
|
Guests |
My take as well, Doug. Dust! It's more likely that the 'frost' we saw before was composed of pure carbon dioxide - dry ice... with zero H2O involvement – no matter how much one might wish it were otherwise. With the low gravity of Mars, the atmosphere is decreasing at a high rate - increased geometrically by solar bombardment, which further accelerates the break up of heavier atmospheric molecules and resultant lighter-ion planetary escape - water vapor being the most vulnerable to such radiation break up. An aside, the idea that pools of surface water will be found on Mars is laughable. Liquid water cannot exist on Mars due to the fact that the atmospheric pressure (over ten times lower than that of earth – and getting lower) simply precludes the possibility. The MER team had already indicated, back in 2004, that the frost seen on Opportunity was ordinary water frost. Re Vladimorka's and AndyG's posts, they also indicated that the frost could perhaps affect the dust on the solar panels; both topics mentioned here: http://marsrovers.jpl.nasa.gov/newsroom/pr.../20041213a.html "A portion of Mars' water vapor is moving from the north pole toward the south pole during the current northern-summer and southern-winter period. The transient increase in atmospheric water at Meridiani, just south of the equator, plus low temperatures near the surface, contribute to appearance of the clouds and frost, Wolff said. Frost shows up some mornings on the rover itself. The possibility that it has a clumping effect on the accumulated dust on solar panels is under consideration as a factor in unexpected boosts of electric output from the panels." While open pools of water might be much more unlikely, I agree, there is still a good chance of minute quantities of liquid water within the soil itself. What about the lab studies showing this as possible, notably briny water that could persist longer than originally believed, which were extensively discussed not long ago? Have we already forgotten about that? |
|
|
Mar 30 2006, 09:59 AM
Post
#43
|
|
Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
|
|
|
Mar 31 2006, 10:44 AM
Post
#44
|
|
Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
|
|
|
Mar 31 2006, 12:04 PM
Post
#45
|
|
Senior Member Group: Members Posts: 2817 Joined: 22-April 05 From: Ridderkerk, Netherlands Member No.: 353 |
|
|
|
Lo-Fi Version | Time is now: 19th April 2024 - 12:11 PM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |