White dwarf

A Dying Star’s Last Act was to Destroy all Its Planets

When white dwarfs go wild, their planets suffer through the resulting chaos. The evidence shows up later in and around…

2 months 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…

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…

4 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 see Dead Planets Crashing Into Dead Stars

Some planets end by colliding with the remnant of their once shining star.

6 months ago

Aging White Dwarfs Become Even More Magnetic

A survey of white dwarfs shows they get more magnetic as they age, and we don't know why.

11 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

A Nearby White Dwarf Might be About to Collapse Into a Neutron Star

A white dwarf star has been found that's more massive than our Sun, but about the same size as our…

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