As a star around the size of the Sun nears the end of its life, it runs out of fuel and turns into a stellar zombie known as a white dwarf star. White dwarfs may be small, but don’t be fooled by ...

In a system with two known planets, astronomers spotted something new: A small object transiting across the sun-sized star. This turned out to be another planet, which was extra hot and Earth-sized.

Astronomers have discovered a new star that is 30 times larger than the sun and could force a major rethink of stellar evolution theories. The star, designated J0524-0336 and located around 30,000 ...

At around 700 times the size of the Sun and over 10,000 ... Betelgeuse has entered a more advanced stage of stellar evolution ...

After weeks of rumors and unconfirmed reports, European scientists have officially announced the discovery of an Earth-sized world around the closest star to the Sun, Proxima Centauri. Although ...

Astronomers have recently discovered that a distant galaxy called GN-108036 is generating about 100 sun-sized stars a year. Skip to Article. ... Sun-like star. ... During the evolution of the ...

Two newfound Earth-size planets are probably the charred survivors of a near-death encounter with their fading parent star, scientists say. The planetary pair, discovered using NASA's Kepler space ...

In a supernova we're familiar with, of a star 10 -100 times the size of the sun, the nuclear reaction begins with the fusion of hydrogen into helium, as in our sun.

Artist’s concept of a Neptune-sized planet, left, around a blue, A-type star. UC Berkeley astronomers have discovered a hard-to-find gas giant around one of these bright, but short-lived, stars ...

Somewhere out there, astronomers knew the sun had another long-lost relative aimlessly drifting through the Milky Way. Now they've found it. Although a happy reunion is unlikely, as the star HIP ...