Mars gullies show signs of recent flowing water
Posted: Wed, Mar 4, 2009, 7:46 AM ET (1246 GMT)
A gully system on Mars appears to have been created by flowing water relatively recently in the planet's history, scientists reported this week. The system, found in a crater in the planet's mid-southern latitudes by a camera on NASA's Mars Reconnaissance Orbiter, appears to have been created as recently as 1.25 million years, very recently on geological timescales. Planetary scientists believe the gullies were created by snow and ice deposits that melted, creating brief periods of liquid, flowing water on the surface. Gullies have been spotted in crater walls in the past, but have been linked in some cases to processes that don't require flowing water.
A gully system on Mars appears to have been created by flowing water relatively recently in the planet's history, scientists reported this week. The system, found in a crater in the planet's mid-southern latitudes by a camera on NASA's Mars Reconnaissance Orbiter, appears to have been created as recently as 1.25 million years, very recently on geological timescales. Planetary scientists believe the gullies were created by snow and ice deposits that melted, creating brief periods of liquid, flowing water on the surface. Gullies have been spotted in crater walls in the past, but have been linked in some cases to processes that don't require flowing water.
Related Links:
| <<previous article | next article>> |
|
news in brief
|
|
|
|
news links
|
|
Tuesday, August 25
MTG-I2 in the starting blocks!
Thales Alenia Space — 6:43 am ET (1043 GMT) No signal left behind: new ways to detect jamming and spoofing
ESA — 6:42 am ET (1042 GMT) Israel seeks leading position in space defense
Globes Online — 6:41 am ET (1041 GMT) Space Force Honor Guard showcases new ceremonial uniform in DC Grand Prix
Military Times — 6:40 am ET (1040 GMT) NZ star track: A watch on space from Beijing to Tehran, Paris to Somalia
Radio New Zealand — 6:40 am ET (1040 GMT) |
