stellar evolution

When Stars eat Their Planets, the Carnage can be Seen Billions of Years Later

Lithium is the key to determining whether a star has eaten a planet.

2 months ago

Dying Star Puffs out six Smoke Rings

A red giant star is dying in an unusual way by blowing smoke rings before its eminent demise.

6 months ago

These Newly-Discovered Planets are Doomed

Astronomers have spied three more exoplanets. But the discovery might not last long. Each planet is in a separate solar…

9 months ago

NASA Simulation Shows What Happens When Stars Get Too Close to Black Holes

What happens to a star when it strays too close to a monster black hole? Astronomers have wondered why some…

10 months ago

Aging White Dwarfs Become Even More Magnetic

A survey of white dwarfs shows they get more magnetic as they age, and we don't know why.

1 year ago

Many Sunlike Stars Gobbled up Some of Their Planets

New research shows that other sunlike stars in our galaxy aren't so kind to their planets. Up to a quarter…

1 year ago

Astronomers Find a Nearby Star That a Spitting Image of a Young Sun

Astronomers have found a young star that is very similar to our Sun, and it could tell us about the…

1 year ago

An All-Sky X-Ray Survey Finds the Biggest Supernova Remnant Ever Seen

Our sky is missing supernovas. Stars live for millions or billions of years. But given the sheer number of stars…

2 years ago

A New Study Says That Betelgeuse Won’t Be Exploding Any Time Soon

I have stood under Orion The Hunter on clear evenings willing its star Betelgeuse to explode. “C'mon, blow up!” In…

2 years ago

Why do Planetary Nebulae Look the Way They Do?

Planetary nebulae are the most beautiful objects in the night sky. Their gossamer shells of gas are otherworldly and evocative.…

2 years ago