Science, Solar System How do astronomers determine the Sun’s sibling stars and where the Sun originated?
Cosmology, Exotic Objects In the first gravitational wave detection, black holes with masses of 29 and 36 Suns created a 62-solar-mass black hole. Three Solar masses were lost; how do black holes lose mass?
Cosmology, Galaxies Will the Pinwheel Galaxy (M33) merge with the Andromeda Galaxy (M31) prior to Andromeda merging with the Milky Way?
