Sentences with phrase «giant stars exhaust»

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Such «dark matter stars» could have been huge and, when their power source was exhausted, might have collapsed to form giant black holes.

Ness and her colleagues developed a computer program that analyzed the light emitted by red giants — bright stars that started out like the sun but exhausted their hydrogen fuel — to determine the stars» masses and ages.

Red giants are dying stars in the late stages of life that are exhausting the nuclear fuel that makes them shine.

He has begun finding and studying worlds around red giants, elderly stars that have nearly exhausted their nuclear fuel.

When stars exhaust their hydrogen fuel the outer layers of the star can expand greatly and the star becomes a giant.

As Vega is so much bigger and hotter than Sol, however, the star will exhaust its core hydrogen after only another 650 million years or so (for a total life of around a billion years) and turn into a red giant or Cepheid variable before puffing away its outer layers to reveal a remnant core as a white dwarf.

When the core fuel is exhausted, the internal structure of the star changes rapidly; it quickly leaves the main sequence and moves toward the region of giants and supergiants.

For a star with at least 0.5 solar masses, once the hydrogen supply in its core is exhausted and it expands to become a red giant, it can start to fuse helium atoms to form carbon.

It may be only about 225 to 250 million years old (Liebert et al, 2005; and Ken Croswell, 2005), but being so much bigger and hotter than Sol, the star will exhaust its core hydrogen within only a billion years and turn into a red giant or Cepheid variable before puffing away its outer layers to reveal a remnant core as a white dwarf.

Information about the ang... ▽ More When the core hydrogen is exhausted during stellar evolution, the central region of a star contracts and the outer envelope expands and cools, giving rise to a red giant, in which convection occupies a large fraction of the star.

Abstract: When the core hydrogen is exhausted during stellar evolution, the central region of a star contracts and the outer envelope expands and cools, giving rise to a red giant, in which convection occupies a large fraction of the star.

Red giants are dying stars in the late stages of life that are exhausting their nuclear fuel that makes them shine.