Space & Physics

A new catalog of gravitational waves more than doubles the known number of these spacetime ripples

The space-based telescopes Hubble and Euclid combined forces to capture the vibrant remains of a dying star in stunning new detail

Don’t worry if you missed Tuesday’s total lunar eclipse. These images show the celestial marvel from around the world

Russia’s war has left many of Ukraine’s world-class observatories in ruins—but the besieged nation’s astronomers already have plans to rebuild and recover

The strange case for prime numbers at the heart of physics

The Trump administration’s war with Iran over its nuclear ambitions raises new questions about the country’s uranium stockpile

A total lunar eclipse is set to grace the sky on Tuesday. Here’s how to see it

This mysterious interstellar visitor is on a whirlwind journey through our solar system

Two NASA spacecraft—the MAVEN orbiter and the Perseverance rover—have now seen very different signals suggesting lightning on Mars

Nebula PMR 1 looks uncannily similar to an electrified brain inside a semitransparent skull

This weekend will offer a chance to see a rare celestial event—Mercury, Venus, Jupiter, Saturn, Uranus and Neptune all aligned in the sky like beads on a string

The announcement that NASA will rejigger Artemis III not to land on the moon in 2027 came after the agency’s Artemis II mission encountered problems, delaying its launch