Home » News & Blogs » How far does the wind blow stuff?
Bookmark and Share
Cosmic Diary

How far does the wind blow stuff?

7 Mar 2016, 19:36 UTC
How far does the wind blow stuff?
(200 words excerpt, click title or image to see full post)

A Piece of Mars: Hargrave crater has an amazing array of colorful surfaces, each of which reflects a different type of rock (this scene is 480×270 m or 0.3×0.17 mi). I like the ripples sitting on top of it all; I’ve long thought that much of the material in those ripples hasn’t moved very far from where it originated. Here’s a good example of why. The ripples on the greenish surface have incorporated some local greenish material. The same is true of the tan ripples in the lower left. I’d bet most of this stuff has only moved as far as it took to make the ripple it’s in. (HiRISE ESP_044161_2005 NASA/JPL/Univ. of Arizona)

Latest Vodcast

Latest Podcast

Advertise PTTU

NASA Picture of the Day

Astronomy Picture of the Day

astronomy_pod