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Jairo
2004-Nov-16, 06:55 PM
Why the moon mountains are smooth if compared with Earth mountains?

Kaptain K
2004-Nov-16, 07:14 PM
Because they are very old and have been worn down by billions of years of micrometeoroid bombardment.

BTW - On Earth, only young mountains are rough and jagged. Old mountains are worn down and smooth.

Evan
2004-Nov-16, 07:20 PM
Smooth? They don't look smooth to me.


Webcam prime focus 6" newt
http://vts.bc.ca/pics/mm1.jpg

Jairo
2004-Nov-16, 11:33 PM
Smooth? They don't look smooth to me.

Evan,

I was talking about close range. Like the Apollo pictures. There are some rough rocks here and there, but the mountains on the horizon are quite smooth.

Evan
2004-Nov-16, 11:58 PM
They didn't send the astronauts to the really mountainous jaggy parts but they are there.

http://starryskies.com/The_sky/events/lunar-2003/3d.crater.peak.html

The Supreme Canuck
2004-Nov-17, 01:18 AM
That's a crater that I would think is younger than the weathered mountains in question. They're really, really, really old.

Evan
2004-Nov-17, 07:44 AM
Yep, it's young. I pulled out the 3-D glasses, very cool. That central peak is kilometers tall based on shadow length and pointier than the Matterhorn. That would be impressive to see from the base.

Among other reasons the astronauts were sent to regions thought to be old because they were old. They wanted very early samples for selenogical reasons.