Stellar Evolution

1 in 10 Red Giants are Covered in Spots, and They Rotate Surprisingly Quickly

Sunspots are common on our Sun. These darker patches are cooler than their surroundings, and they're caused by spikes in…

1 month ago

Stars Like Our Sun Become Lithium Factories as They Die

In the beginning, the big bang created three elements: hydrogen, helium, and lithium. But it only produced a trace of…

1 month ago

This is a Binary Star in the Process of Formation

About 460 light years away lies the Rho Ophiuchi cloud complex. It's a molecular cloud—an active star-forming region—and it's one…

2 months ago

Much of the Lithium Here on Earth Came from Exploding White Dwarf Stars

The Big Bang produced the Universe's hydrogen, helium, and a little lithium. Since then, it's been up to stars (for…

2 months ago

Was Betelgeuse Formed by Merging Stars?

Modern humans—or Homo Sapiens—have only been around for about 250,000 years. That's only the blink of an eye in cosmological…

3 months ago

Super-Supernova Released Ten Times More Energy than a Regular Supernova

It's easy to run out of superlatives and adjectives when your puny human language is trying to describe humongously-energetic events…

4 months ago

Astronomers Watch a Nova Go From Start to Finish for the First Time

A nova is a dramatic episode in the life of a binary pair of stars. It's an explosion of bright…

4 months ago

Two White Dwarfs Merged Together Into a Single “Ultramassive” White Dwarf

Astronomers have found a white dwarf that was once two white dwarfs. The pair of stars merged into one about…

5 months ago

Here’s a New Planetary Nebula for Your Collection: CVMP 1

Some stars die a beautiful death, ejecting their outer layers of gas into space, then lighting it all up with…

6 months ago

Bizarre Star Could be the Result of Two White Dwarfs Merging Together

Stars live and die on epic time scales. Tens of millions of years, hundreds of millions of years, even billions…

1 year ago