The Milky Way is not the serene, flat disc that textbook illustrations suggest. Astronomers have confirmed that the outer edges of our galaxy’s disc are warped and that this deformation rotates slowly ...

Galaxies are massive, far exceeding the size of the one depicted in the movie “Men in Black.” These celestial bodies span ...

Add Yahoo as a preferred source to see more of our stories on Google. Right above you is the sky – or as scientists would call it, the atmosphere. It extends about 20 miles (32 kilometers) above the ...