There are currently thought to be eight white dwarfs among the hundred star systems nearest the Sun. [2] The unusual faintness of white dwarfs was first recognized in 1910. [3]: 1 The name white dwarf was coined by Willem Jacob Luyten in 1922.

2022年3月4日 · White dwarfs contain approximately the mass of the sun but have roughly the radius of Earth, according to Cosmos, the astronomy encyclopedia from Swinburne University in Australia. This...

When they reach the end of their long evolutions, smaller stars —those up to eight times as massive as our own sun—typically become white dwarfs. These ancient stars are incredibly dense. A...

2009年3月19日 · Once things calm down, a small sparkling jewel of a white dwarf star will remain. This tiny remnant will have a mass of around half that of our present Sun, but will be the size of the Earth.

2023年4月25日 · White dwarfs are the hot, dense remnants of long-dead stars. They are stellar cores, left behind when stars exhaust their fuel supplies and blow their gases into space. These objects mark the...

2009年4月1日 · Professor Denis Sullivan studies white dwarfs – small and dense stars that are cooling down after being red giants. Our Sun, and most other stars, will eventually become a white dwarf.

2021年9月23日 · A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula.

2024年12月19日 · In five billion years' time, our sun will turn into a white dwarf after its red giant phase. The sun's outer layers will be cast away into deep space, revealing its pearlescent core....