News tagged with white dwarf star

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The fate of exomoons

When a star like our sun gets to be very old, after another seven billion years or so, it will shrink to a fraction of its radius and become a white dwarf star, no longer able to sustain nuclear burning. Studying the older ...

dateMar 27, 2017 in Astronomy
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Star in closest orbit ever seen around black hole

Astronomers have found evidence of a star that whips around a likely black hole twice an hour. This could be the tightest orbital dance ever seen by a black hole and a companion star in our own Milky Way galaxy.

dateMar 13, 2017 in Astronomy
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Dating the Milky Way's disc

When a star like our sun gets to be very old, after another seven billion years or so, it will no longer be able to sustain burning its nuclear fuel. With only about half of its mass remaining, it will shrink to a fraction ...

dateFeb 20, 2017 in Astronomy
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Astrophysicists discover dimming of binary star

A team of University of Notre Dame astrophysicists led by Peter Garnavich, professor of physics, has observed the unexplained fading of an interacting binary star, one of the first discoveries using the University's Sarah ...

dateJan 16, 2017 in Astronomy
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