Astronomy

Other planets have moons, too. Do they get eclipses like we do?

A strange class of comet could explain the enigmatic behavior of ‘Oumuamua, the first known interstellar object—and even shed light on how Earth became habitable

Probing the dawn of the cosmos for clues to how the first galaxies and supermassive black holes formed is no easy feat

The exoplanet telescope TESS revealed a distant world using an entirely different detection method than the one it was built around

The rocket’s red glare has nothing on these images from Chandra X-ray Observatory

The moon is Earth’s constant companion. But will that always be the case?

The Vera C. Rubin Observatory in Chile has started a 10-year survey of the changing night sky

Astronomers have for the first time observed an atmosphere around a giant planet orbiting a white dwarf

This brilliant new image, taken by Europe’s Euclid space telescope, offers a preview of the kind of imaging that will be possible with NASA’s upcoming Roman telescope

Inside the quest to rescue NASA’s aging Swift observatory

A field guide to the space rocks you might see streaking across the night sky

Sometimes we mistake one kind of object with another to disastrous effect