Space

For the first time, astronomers have spotted a middleweight black hole in the nearby universe. The discovery could help solve […]

Head-scratching observations of distant galaxies are challenging cosmologists’ dominant ideas about the universe, potentially leading to the implication that the

One of the farthest known quasars seems to have shut down the creation of new stars in all the galaxies

Imagine going on a weeklong business trip and not coming home until the following year. That may be the situation

As more and more species near extinction, scientists have been collecting samples from animals, plants and other creatures and storing

To leave a lasting trail, meteors need to aim low. A new survey of shooting stars shows that meteors that

For millennia, humans have seen inexplicable things in the sky. Some have been beautiful, some have been terrifying, and some

A new look at decades-old data from the Apollo missions has uncovered evidence of tens of thousands of previously unrecognized