Starting at 7:30pm PDT/10:30pm EDT, we will webcast a special event around the launch of NASA's next lunar spacecraft. Watch our special coverage with lunar scientists and live video from the launch site, as well as NASA TV footage of the launch itself.
Here it is: the view from Saturn of our Earthly home, one and a half billion kilometers away. We see Earth and the Moon through a thin veil of faintly blue ice crystals, the outskirts of Saturn's E ring. Earth is just a bright dot -- a bit brighter than the other stars in the image, but no brighter than any planet (like Saturn!) in our own sky.
Really cool movies from Jim Richardson propose to explain how the same physics of impact cratering can produce such differently-appearing surfaces as those of the Moon, large asteroids like Eros, and teeny ones like Itokawa.