September
September 30, 2013
A piece of Mars: These sharp-tipped hills are dunes near the north pole of Mars. At the height of summer they’re lovely dark dunes, but because it’s just barely spring here they’re still covered in white frost (mostly CO2 ice, […]
September 23, 2013
The new favorite is “A Bushel and a Peck”. The first half dozen times it was cute. No, really.
September 18, 2013
A piece of Mars: All that sand on Mars — where does it come from? It’s often hard to figure that out. Here is a rare case where we can see material shedding from a stack of bright layered rocks, […]
September 4, 2013
A piece of Mars: In the center are two dark dunes, racing one another to jump over hurdles formed of older, now inactive dunes (or maybe those bright things are ripples, we still don’t know for sure). The dune in […]