Author: Lana Williams, PhD Candidate, School of Physics and Astronomy, Lancaster University

Phobos is dominated by Stickney crater, a 9km (5.6 mile) bowl visible on the right. NASA/JPL-Caltech/University of Arizona The Earth got its Moon when a celestial object collided with our planet more than four billion years ago. This impact hurled molten rock into space, which eventually coalesced to form the satellite we can see every […]