This stunning image features a deep field view of the Cassiopeia constellation where the two small planetary nebulas can be ...

Caption This Hubble Space Telescope image shows a bow shock around a very young star called LL Ori. Named for the crescent-shaped wave made by a ship as it moves through water, a bow shock can be ...

In space, supernova explosions, black holes, and other cosmic events can accelerate particles (like electrons) to incredibly high speeds, even rivaling the velocity of light. This is termed ...