Stars and planets are inextricably linked. They form together and stars shape the fate of planets. Stars create the dusty protoplanetary disks that give birth to planets of all kinds. And when a star ...

Not every planet has a sun. Scattered through the Milky Way are worlds that formed the same way ordinary planets do, then ...

Since we cannot look into the interiors of stars and planets, we rely on lab experiments to replicate the physical processes ...

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 ...

Planets form from disks of gas and dust around young stars, but the gas needed for growth does not last forever. New ...

Is it a two-for-sun deal. Astronomers were blown away after discovering a bizarre exoplanet that orbits twin stars closer than any ever seen before in a binary star system, per a starry study ...

Earth's satellite skims through several constellations, meeting up with planets and stars in the sky this week.

One exploded star left behind six Earth masses of rocky planet material just 100 million years after the Big Bang, a ...

Many astronomical objects play by clear rules and fit into neat categories, but brown dwarfs (celestial objects too massive to be mere planets, but too small to be real stars) continue to refuse to ...

Learn why only 14 out of over 6,000 exoplanets orbit two stars, and how Einstein’s general theory of relativity may be to blame. Planets with two suns have long captured the imagination of science ...