Astronomy

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun

The heavens will provide a bounty of viewing treasures in the coming year

Pluto was unseated as the ninth planet in our solar system. Will we find a real Planet Nine?

The familiar zodiac constellations are defined by Earth’s motion around the sun, but they don’t define your fate

Will still more auroras ring out 2024, a year marked by the celestial displays?

Twenty years ago today a magnetar’s epic tantrum made our planet ring like a bell from tens of thousands of light-years away

With billions of stars in the Milky Way, some nomenclature standardization is necessary

See the year’s most striking images from the Hubble and James Webb space telescopes, NASA’s Mars rover and the best sky watching on offer

As wildfires grow in severity and frequency, they’re not only threatening lives but also our visual connection to the cosmos

The celestial equivalent to latitude and longitude lets astronomers find their way across the heavens

Barnard 68 is often mistaken for a hole in space, but it’s actually a dense, opaque cloud of dust—for now