Major survey results now hint that dark energy has evolved across cosmic history, raising questions about the standard model ...

"It's like trying to spot a fish by looking for ripples in a pond, rather than trying to see the fish itself." ...

Magnetars are among the rarest—and weirdest—denizens of the galactic zoo. They have powerful magnetic fields and may be the ...

One of the most famous and beautiful cosmic sights shows its colors in this new image from the Hubble Space Telescope. The Veil Nebula is the remnant of a massive star which exploded in a supernova 10 ...