Stellar Evolution

A New Supernova Remnant Found from an Exploding White Dwarf Star

Astronomers have spotted the remnant of a rare type of supernova explosion. It's called a Type Iax supernova, and it's…

3 weeks 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.…

1 month ago

A Galaxy is Making New Stars Faster Than its Black Hole Can Starve Them for Fuel

A monster lurks at the heart of many galaxies – even our own Milky Way. This monster possesses the mass…

2 months ago

An Extreme Simulation of the Universe’s First Stars

An international team of astronomers has conducted an extreme simulation that modeled what the formation of the first stars looked…

4 months ago

The Youngest Stellar Disk Ever Seen, Just 500,000 Years Old

Unless you’re reading this in an aircraft or the International Space Station, then you’re currently residing on the surface of…

4 months ago

There’s No Chemical Difference Between Stars With or Without Planets

Strange New Worlds Imagine if a star could tell you it had planets. That would be really helpful because finding…

6 months ago

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…

8 months 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…

8 months 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…

9 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…

9 months ago