A distant Sun-like star appears to have devoured one of its planets, leaving behind a surprising chemical fingerprint.

Two “superpuff” planets orbiting a sunlike star over 1,000 light-years from Earth are as big as Jupiter and as dense as ...

Our sun is about halfway through its life, which means Earth is as well. After a star exhausts its hydrogen nuclear fuel, its diameter expands more than a hundredfold, engulfing any unlucky planets in ...

A mysterious "rogue" planet has been observed gobbling six billion tons of gas and dust a second—an unprecedented rate that blurs the line between planets and stars, astronomers said Thursday. Unlike ...

New research using NASA's powerful JWST telescope has identified a planet 41 light years away which may have an atmosphere. The planet is within the "habitable zone," the region around a star where ...

Dying stars may be wiping out nearby giant planets as they expand into red giants. Astronomers found that these close-in planets become increasingly rare around more evolved stars, suggesting many ...

At the right point of the orbit and stellar cycle, the star’s chromosphere brightens.

Trying to understand the Universe is often less about seeing it clearly and more about accepting how quickly our intuition breaks down. If Earth were reduced to the size of a small 12 centimeter ...

What stars and planets are visible in the night sky tonight? Join us for an introduction to the night sky, the stars, and constellations. Then we’ll lift off of the Earth to take a tour of the solar ...