A new study by Eden Girma, an undergraduate student at Harvard University and a member of the Banneker/Aztlan Institute, has found that every few thousand years a star wanders too close to the black hole present at the core of our galaxy - the Milky Way. The black hole shreds the stars in a day through a process called tidal disruption.
A new study suggests that millions of years ago, Earth might have had up to 20 tiny moons circling around it. With time, these moons mashed up together to form one giant moon. The theory explains how the chemical makeup of Earth and Moon is so similar to each other.
