NEWS!! NASA discovers that dunes in Mart have movement!

The dunes on Mars are more dynamic than we previously believed and they can move up to several meters, as a group of scientists said through the images of NASA MRO.

"We used to think that the sand on Mars is relatively immobile, so these new observations are changing our perspective," said Nathan Bridges, planetary scientist at the Physics Laboratory at Johns Hopkins University in Laurel, Maryland.


According to Bridges, "Or Mars have faster and more powerful winds, or the winds can carry more sand."

The atmosphere of Mars is very thin (about 1% that of Earth), so you need much stronger winds to move a grain of sand.


You need 130 kilometers per hour winds to move the small particles of Mart. On Earth they would move with winds around 16 mph.

The dunes where movement isn't seen suggests that it may be bigger sand grains or more adhesioned to the surface layers.



Paula.