Mars 'X-ray' gravity maps reveal how its crust has changed
 

Our lust for Martian knowledge (and travel) isn't showing any signs of stopping and now we've gotten a look inside the planet thanks to new X-ray-like gravity maps. NASA says that it now has a better idea of where to land its spacecraft thanks to the...

http://www.engadget.com/2016/03/22/m...t-has-changed/