At long last, particles of water–ice have been discovered in the frozen Kuiper Belt of another star. The discovery, made by ...

The speed of light is the fastest anything can travel. What happens to a photon from a galaxy 25 million light years away on its journey toward Earth?

Earth—our tiny blue dot in the galaxy—is approximately 26,000 light years away from a fascinating and active region of the Milky Way called the Central Molecular Zone (CMZ). This region holds clues ...

Astronomers are urging Earthlings to keep their eyes peeled for a once-in-a-lifetime sight that hasn't been observed for 80 ...