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10/20/2017 1:01:18 AM
9/22/2017 12:11:25 AM
Posted: 9/21/2005 7:36:17 AM EDT
Enviro-nuts probably think so.


Sep 20, 9:08 PM ET

PASADENA, Calif. - The Martian surface has undergone dramatic changes in the last few years with the appearance of new gullies and fresh boulder tracks, new images released Tuesday show.

The photos, taken by the orbiting Mars Global Surveyor spacecraft, suggest that the Red Planet is perhaps more active than previously thought.

The spacecraft, in its ninth year in orbit, spotted two fresh gullies on a Martian sand dune that were not present in 2002. Scientists think the gullies might have formed when frozen carbon dioxide trapped by windblown sand vaporized, releasing gas that allowed the sand to flow freely.

The spacecraft also took images of boulder tracks at another site that were not there two years ago. The tracks were probably caused by dozens of boulders rolling down a slope from strong wind or a quake, scientists said.

Researchers also noted that impact craters forming since the 1970s suggest that crater-formation is a slow process, occurring at one-fifth the pace previously thought.

The pace is important because it is used to estimate the age of Martian surfaces, said Michael Malin, principal investigator of the camera aboard the spacecraft.

The planet may be undergoing a climate change, according to images that show a shrinking of carbon dioxide deposits near the south pole. For the last three Martian summers, the deposits have shrunk from the previous year.
Link Posted: 9/21/2005 7:38:08 AM EDT
[Last Edit: 9/21/2005 7:39:06 AM EDT by mcnielsen]

Originally Posted By rippler:
For the last three Martian summers, the deposits have shrunk from the previous year.

Coincidence that we have been making landings there as of recently?


ETA: Since Bush authorized the launches, it's his fault. Republicans are ruining the universe!!!
Link Posted: 9/21/2005 7:43:20 AM EDT
Yep! Bush's fault! [/DU]
Link Posted: 9/21/2005 8:59:58 AM EDT

Originally Posted By DnPRK:
Yep! Bush's fault! [/DU]

Beat me to it!

Here's the left-wing scientific observation model:

1. Observe
2. Find fault
3. Direct blame

Every scientific development that allows us to observe something that we've never measured before is a new opportunity to find impending doom and to direct blame.
Link Posted: 9/21/2005 9:05:26 AM EDT
Link Posted: 9/21/2005 9:56:50 AM EDT
Since that's the "left-wing scientific observation model," I assumed that the direction of the blame was a given.
Link Posted: 9/21/2005 6:06:59 PM EDT
[Last Edit: 9/21/2005 6:09:07 PM EDT by KlubMarcus]
Wha.. wha... did someone say we discovered oil on Mars? Mobilize the Halliburton extra-planetary nucular drilling rig and space tankers!
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