A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

Astronomers everywhere will soon be peering through their telescopes for a celestial ‘planet parade’ that occurs just once every few decades.

The Andromeda galaxy, then known as the ... Light from the galaxy passes through a prism or reflects off a diffraction grating in a telescope, which captures the intensity of light from blue ...

Astrophotographers use sophisticated imaging technology to take and edit photographs that bring us the cosmos with startling ...