Bright spot on Venus |
Bright spot on Venus |
Jul 30 2009, 09:33 PM
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#1
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
space.com story on mysterious cloud brightening on Venus:
http://www.space.com/scienceastronomy/0907...right-spot.html ...also spotted by an amateur astronomer. -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Aug 4 2009, 07:37 PM
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#2
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Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
Ummm... let me get this straight. VEX ops are pre-planned four months in advance and nothing can be changed in those pre-planned ops plans? So that any follow-up on transient phenomena literally cannot take place for at least four months?
If that's the case, then we truly don't have a resource at Venus that can do anything at any given time except its pre-planned program, which will always be a good four months out of date. I guess we can take "respond to transient phenomena or rapid changes in environment" off the list of VEX's abilities. (I know, it's never been a claim of the project.... but, as Doug says, the whole thing gives me rage.) But, to be fair... with what do I compare this? Can Cassini's op executions be changed after they are loaded into the spacecraft? If so, how quickly? How fast can Cassini respond to some changing circumstance? How about Hubble? We know Hubble had been packed solid with use requests and that it was still capable of being re-tasked to get Jupiter images within a week of the first detection of the impact on old Jove. Maybe we're all just too used to ops plans like those for the MERs, where what we do tomorrow is highly impacted by what happened today. Obviously, many NASA probes (especially those in the outer system) don't have that kind of operational flexibility, either. So... how does VEX compare to other planetary probes in terms of being re-tasked? -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Aug 6 2009, 07:51 AM
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#3
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Member Group: Members Posts: 247 Joined: 17-February 07 From: ESAC, cerca Madrid, Spain. Member No.: 1743 |
Ummm... let me get this straight. VEX ops are pre-planned four months in advance and nothing can be changed in those pre-planned ops plans? So that any follow-up on transient phenomena literally cannot take place for at least four months? If that's the case, then we truly don't have a resource at Venus that can do anything at any given time except its pre-planned program, which will always be a good four months out of date. I guess we can take "respond to transient phenomena or rapid changes in environment" off the list of VEX's abilities. (I know, it's never been a claim of the project.... but, as Doug says, the whole thing gives me rage.) But, to be fair... with what do I compare this? Can Cassini's op executions be changed after they are loaded into the spacecraft? If so, how quickly? How fast can Cassini respond to some changing circumstance? How about Hubble? We know Hubble had been packed solid with use requests and that it was still capable of being re-tasked to get Jupiter images within a week of the first detection of the impact on old Jove. Maybe we're all just too used to ops plans like those for the MERs, where what we do tomorrow is highly impacted by what happened today. Obviously, many NASA probes (especially those in the outer system) don't have that kind of operational flexibility, either. So... how does VEX compare to other planetary probes in terms of being re-tasked? -the other Doug Any other questions? -------------------- --
cndwrld@yahoo.com |
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Aug 6 2009, 08:46 PM
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#4
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
With the slow Venusian rotation, if the white spot is caused by something ongoing on the surface and is superrotating with the atmosphere, wouldn't it become a white band?
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