The European Space Agency’s Gaia mission could potentially find up to 70,000 new exoplanets in the Milky Way.
Larger galaxies are unable to create new stars at a rapid enough pace so they start to “eat” stars in neighboring galaxies.
Our galaxy may simply be too big for intelligent civilizations to make contact with each other.
The black hole is five times as massive as the one in the center of our Milky Way in a galaxy that is 1/500th the size.
The new evidence contradicts earlier findings that there were only two spiral arms in the Milky Way.