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A few days, scientists may have made one of the greatest discoveries in astronomy. They discovered what looked like another planet that was seen outside our galaxy.

  The discovery of the photon dramatically changed the way in which we understand our galaxy. For centuries, the way in which light travels was incredibly misunderstood. Now that we understand how photons operate, NASA is able to use this information to make groundbreaking observations about space.  What Are Photons? To put it simply, photons are particles of light. For centuries, scientists could not...

NASA's Kepler mission has discovered an estimated 715 unknown planets. These verified planets orbit a 305 star constellation, which may hold quite a few solar systems like our own.