Why do pulsars, one of the universe's most reliable clocks, occasionally speed up? A new theory suggests there's a perfectly flowing fluid at the heart of this mystery.
A planetarium show at New York City's American Museum of Natural History this month gave audience members a vivid look at the New Horizons spacecraft's epic flyby of Pluto.
Former NASA astronaut Pamela Melroy recently shared her experiences and insights about spaceflight and exploration.
For years, many astronomers thought planets around red dwarfs were probably uninhabitable. But recently, the thinking has begun to change.
Small 'nanoflares' erupting from the sun might be the key to unlocking a cosmic mystery, according to a new study.
Light from a radioactive metal forged inside a supernova blast could prompt a rethink of how some star explosions occur. See the latest discovery from the supernova SN 2014J.
The change in the tilt of the magnetic field of a pulsar, in this case, the one in the famous Crab Nebula, has been observed for the first time.
A star that moves at record-breaking speed could help astronomers test Einstein's theory of general relativity.