The plains of Meridiani Planum, where the Opportunity Rover is currently exploring, is home to many surface features, but none are as stunning and the wind-formed dunes and ripples. How do these features form, and…

On Friday, September 29th in Adelaide, Australia, Elon Musk presented SpaceX’s new update to the Interplanetary Transport System. The update to last year’s presentation focused on how to make this concept more real and specifically…