30 juin 2016 - Two Sizes of Ripples on Surface of Martian Sand Dune
Description:
Sand dunes and the smaller type of ripples also exist on Earth. However, the unique aspect are the larger ripples; roughly 10 feet apart, they are a type not seen on Earth nor previously recognized as a distinct type on Mars. They have distinctive crest lines, compared to the smaller ripples. The sand is very dark from the darkness of the minerals that make up its composition.Ajouté au bande de temps:
Date:
30 juin 2016
Maintenaint
~ Il y a 7 ans et 10 mois
