Since so many of us are wondering what the heck those white spots are on the dwarf planet Ceres, NASA's decided to hold a contest. Click the image and you'll be taken to a page where you can vote on one of six choices- volcano, geyser, rock, ice, salt deposit or other.
Until Dawn moves in for a closer look in the months ahead, it's anyone's guess whatthe spots might be. Ice is currently lead...
April 24, 2015 - 3:22pm