Add Yahoo as a preferred source to see more of our stories on Google. A small bright blue point in the center is surrounded by exploding gas, hued red then diminishing to green before fading into the ...

A colossal structure in the distant Universe is defying our understanding of how the Universe evolved. In light that has traveled for 6.9 billion years to reach us, astronomers have found a giant, ...

(CNN) — An unusual double-ring structure spotted in space with the help of citizen scientists has turned out to be a cosmic rarity. The celestial anomaly, captured by a radio telescope, is an odd ...

Sometimes, light curves of stars and pulsars have wonky, flickering properties, and some scientists wonder if these light curves could be caused by artificial megastructures built by advanced ...

The Ring Nebula is perhaps one of the most photographed objects in the night sky, dating back to its first image in 1886. Its intrinsic structure has been debated for as long as it has been observed.