New observations downplay Mars water
Posted: Fri, Sep 21, 2007, 8:15 AM ET (1215 GMT)
Data from NASA's Mars Reconnaissance Orbiter (MRO) suggest that gullies that recently formed in some Martian craters were not created by liquid water. The gullies had formed in crater walls some time between two sets of Mars Global Surveyor images taken several years part, and scientists speculated that groundwater leaking out the side of the crater could have caused the gullies. However, more detailed observations by MRO argue that the gullies were formed by landslides of loose, dry material. Other MRO observations of much older features may be evidence that any liquid water that existed on the planet's surface early in its history was short-lived.
Data from NASA's Mars Reconnaissance Orbiter (MRO) suggest that gullies that recently formed in some Martian craters were not created by liquid water. The gullies had formed in crater walls some time between two sets of Mars Global Surveyor images taken several years part, and scientists speculated that groundwater leaking out the side of the crater could have caused the gullies. However, more detailed observations by MRO argue that the gullies were formed by landslides of loose, dry material. Other MRO observations of much older features may be evidence that any liquid water that existed on the planet's surface early in its history was short-lived.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
Space Force picks 14 companies for GEO surveillance program
Posted: Sat, Apr 11 10:34 AM ET (1434 GMT) |
|
news links
|
|
Monday, April 20
Ovzon Launches Next-Generation Mobile Satellite Terminal – Ovzon T8
Ovzon — 5:39 am ET (0939 GMT) Musk’s SpaceX threatens to withhold mobile service from Australia
Australian Financial Review — 5:35 am ET (0935 GMT) Space Force looks to personnel growth to boost integrated testing approach
Aerospace America — 5:32 am ET (0932 GMT) Jeff Bezos’s rocket catches up with Elon Musk’s in space rivalry
The Daily Telegraph — 5:30 am ET (0930 GMT) Blue Origin Rocket Stumbles on First Commercial Mission
Wall Street Journal — 5:29 am ET (0929 GMT) |
