white dwarf

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…

3 months 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…

3 months 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…

3 months 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. …

6 months ago

Planet Found in the Habitable Zone of a White Dwarf

Most stars will end their lives as white dwarfs. White dwarfs are the remnant cores of once-luminous stars like our…

6 months ago

Astronomers Discover a Totally New Kind of Nebula

Most Universe Today readers are familiar with nebulae. They're gaseous structures lit up with radiation from nearby stars, and they're…

7 months ago

White Dwarfs can Continue Burning Hydrogen, Even After They’re Dead

White dwarfs are supposed to be dead remnants of stars, doomed to simply fade away into the background. But new…

11 months ago

From the way These Stars Look, a Supernova is Inevitable

Sometimes loud explosions are easier to deal with when you know they’re coming.  They are also easier to watch out…

1 year ago

White Dwarf Measured Before it Exploded as a Supernova

Using isotope measurements of a supernova remnant, astronomers have calculated the core density of a white dwarf before it exploded.

1 year ago

How can White Dwarfs Produce Such Powerful Magnetic Fields?

White dwarfs have some surprisingly strong magnetic fields, and one team of astronomers may have finally found the reason why.…

1 year ago