Space around the Sun contains far more than planets. Scattered through it are smaller bodies made of rock, metal, ice and ...

A distant star dimmed by 97% for nearly 200 days. Astronomers say giant rings around a brown dwarf or super-Jupiter may explain it.

A city-sized green comet, C/2024 E1 (Wierzchoś), is approaching Earth and will soon be ejected into interstellar space, ...

A comet discovered nearly a century ago is putting up a spectacular show in the night sky. Comet 29P/Schwassmann-Wachmann underwent an explosion in February 2026, which increased its brightness by ...

NASA describes deep hydrogen compression that eventually forms conductive metallic liquid, making Jupiter feel less like Earth and more like a continuous gradient of states. That alone breaks the old ...

The Helix nebula, imaged here, lies 650 light-years away in the constellation Aquarius. Also known as NGC 7293, it is a ...

For 165 years, the giant fossil Prototaxites taiti puzzled scientists. Standing 26 feet tall, it may belong to an unknown branch of multicellular life, reshaping our understanding of early terrestrial ...

NASA's head of planetary defence has revealed what keeps her up at night - tens of thousands of 'city killer' asteroids that remain undetected.