View Full Version : Discussion: Eroded Valleys on Mars

2004-Aug-22, 04:00 PM
SUMMARY: This image was taken by the European Space Agency's Mars Express spacecraft, and shows a system of outflow channels called the Dao Valles and Niger Valles; it was taken in June 2004, during the spacecraft's 528th orbit. The eroded channels are in a region of Mars that's near the southern flank of the Hadriaca Patera volcano, so they could have been created by fast moving lava "running off" during an eruption.

What do you think about this story? Post your comments below.

2004-Aug-22, 11:42 PM
what a picture ! :)

2004-Aug-25, 01:56 AM
A lot of times I look at a picture like this and I see it inverted. The craters look like rings carved into the ground and the center part looks like a plateau.

What causes that? Any tricks for flipping my perception around?