Breathtaking Hubble Images Challenge Ideas About How Galaxies GrowSpectacular pictures of distant galaxies are challenging our view of the universe.
Study: European Spacecraft Could Find 70,000 New Alien WorldsThe European Space Agency's Gaia mission could potentially find up to 70,000 new exoplanets in the Milky Way.
Study: Monster Galaxies Resort To Cannibalism To Keep GrowingLarger galaxies are unable to create new stars at a rapid enough pace so they start to "eat" stars in neighboring galaxies.
Study: Aliens May Be Too Distant For ContactOur galaxy may simply be too big for intelligent civilizations to make contact with each other.
NASA Finds 'Massive' Black Hole In Tiny GalaxyThe 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.
Study: Our Galaxy Has Four ArmsThe new evidence contradicts earlier findings that there were only two spiral arms in the Milky Way.

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