white dwarf

This Supernova Lit Up the Sky in 1181. Here’s What it Looks Like Now

Historical astronomical records from China and Japan recorded a supernova explosion in the year 1181. It was in the constellation…

4 weeks ago

M87's Jet is Triggering Novae

Everyone loves a good mystery, and astronomers have just uncovered a new one in a nearby supermassive galaxy called M87.…

7 months ago

Did this Supernova Explode Twice?

All supernovae are exploding stars. But the nature of a supernova explosion varies quite a bit. One type, named Type…

8 months ago

These are the Fastest Stars in the Galaxy

Until recently, there were only ten known stars on trajectories that will allow them to escape the Milky Way Galaxy,…

11 months ago

The Mass of a Single Star (other than the Sun) has Been Directly Measured for the First Time

How do you measure an object's weight from a distance? You could guess at its distance and therefore derive its…

1 year ago

Two Stars Orbiting Each Other Every 51 Minutes. This Can’t End Well

We don't have to worry too much about our Sun. It can burn our skin, and it can emit potent…

2 years ago

Astronomers Finally Catch a Nova Detonating on a White Dwarf as it's Happening

On July 7, 2020, the X-ray instrument eROSITA captured an astronomical event that – until then – had only been…

2 years ago

If There are Dyson Spheres Around White Dwarfs, We Should be Able to Detect Them

Searching for Dyson spheres, rings, or swarms remains a preoccupation of many astronomers.  If there are any out there, they…

2 years ago

A New Kind of Stellar Explosion Has Been Discovered: Micronovae

The most energetic explosions in the Universe come from stars called supernovae. These galactic bombs have the energy of about…

2 years ago

Astronomers Discover a Strange new Star That Might be From the Collision Between two Dead Stars

With how many stars there are in our galaxy, there are sure to be plenty of different types of them. …

2 years ago