Astronomers have pinpointed the origin of mysterious repeating radio bursts from space

[Admin]

Innew research, we have for the first time tracked a fast radio burst back to its source: a common kind of lightweight star called a red dwarf.

Astronomers have pinpointed the origin of mysterious repeating radio bursts from space : Read more

 

[Helium3]

White Dwarf stars are NOT formed by explosion .

 

[Unclear Engineer]

From https://en.wikipedia.org/wiki/White_dwarf :

"Because the material in a white dwarf no longer undergoes fusion reactions, it lacks a heat source to support it against gravitational collapse. Instead, it is supported only by electron degeneracy pressure, causing it to be extremely dense. The physics of degeneracy yields a maximum mass for a non-rotating white dwarf, the Chandrasekhar limit— approximately 1.44 times M☉— beyond which electron degeneracy pressure cannot support it. A carbon–oxygen white dwarf which approaches this limit, typically by mass transfer from a companion star, may explode as a Type Ia supernova via a process known as carbon detonation;[1][5] SN 1006 is a likely example."

But, that is apparently not the case for all white dwarfs:

"White dwarfs are thought to be the final evolutionary state of stars whose mass is not high enough to become a neutron star or black hole. This includes over 97% of the stars in the Milky Way.[4]: §1  After the hydrogen-fusing period of a main-sequence star of low or intermediate mass ends, such a star will expand to a red giant and fuse helium to carbon and oxygen in its core by the triple-alpha process. If a red giant has insufficient mass to generate the core temperatures required to fuse carbon (around 109 K), an inert mass of carbon and oxygen will build up at its center. After such a star sheds its outer layers and forms a planetary nebula, it will leave behind a core, which is the remnant white dwarf."