Phone battery dead? Learn how to tell time with the Big Dipper. Also, don't miss a remarkable transit of Ceres in front of the bright spiral galaxy M100.
Radioactive heating in this asteroid's early days may have destabilized the small world, creating asymmetric surface features.
Host Michelle Thaller speaks with Lucy McFadden, co-investigator of NASA’s Dawn Mission that traveled 130 million miles to orbit the asteroids Vesta and Ceres.