Space & Physics

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

A recent study in the journal Nature carries cosmos-quaking implications for our understanding of the universe—except a new preprint says that it’s wrong

A best-yet measurement of one of general relativity’s most mind-boggling effects is “another feather in Einstein’s cap”

For almost 60 years, a global ban on nuclear weapons in space has held up. But the growing number of satellites and increasing geopolitical tension has scientists worried the moratorium could fail

To align Coordinated Universal Time with Earth’s rotation, a second occasionally gets added to the year. That may change in 2027

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

The Big Apple’s biannual sunset display is as iconic as it is captivating. Here’s everything you need to know about why the phenomenon happens and how best to view it

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

China’s Tianwen-2 aims to collect samples from asteroid Kamo’oalewa and return them to Earth

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?