Stars

Supercomputer Simulation Shows a Supernova 300 Days After it Explodes

The answers to many questions in astronomy are hidden behind the veil of deep time. One of those questions is…

3 weeks 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…

4 weeks ago

Betelgeuse Probably Dimmed Because of Enormous Starspots

A few months ago we all watched as Betelgeuse dimmed. Between October 2019 and 22nd of February 2020 the star's…

1 month ago

Planets Form in Just a Few Hundred Thousand Years

Astronomers like to observe young planets forming in circumstellar debris disks, the rotating rings of material around young stars. But…

2 months ago

Antares is a supergiant star that would fill the Solar System beyond Mars, but its atmosphere is 12 times bigger than that

Antares, the angry red eye of the constellation Taurus the bull, is a red supergiant star near the end of…

2 months ago

New Horizons is so Far From Earth That the Positions of the Stars Look a Little Different From its Perspective

From its current position in the Kuiper Belt, the New Horizons spacecraft recently conducted a parallax experiment that is not…

2 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…

2 months ago

It Should Be Easiest to Search for Young Earth-like Planets When They’re Completely Covered in Magma

How did Earth evolve from an ocean of magma to the vibrant, life-supporting, blue jewel it is now? In its…

2 months ago

At the Heart of the Milky Way, Stars Come Close to Each Other All the Time

A new study provides new estimates on how often stars near the center of our galaxy experience "close encounters," which…

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