Why is Earth so dry?
July 30, 2012
Earth with large oceans, rivers and glaciers near the North and South poles, doesn’t seem to have a water shortage. But the fact is that she is 99-percent dry rock. Only less than 1 percent of its mass is water!
Voyage of the Dawn (video)
May 25, 2012
Dawn is a NASA spacecraft tasked with the exploration and study of the two largest members of the asteroid belt: Vesta and the dwarf planet, Ceres. This video (below) features images taken by Dawn as well as animated recreations of Vesta’s most focal geological formations. Credit NASA
