In 5 billion years or so, when the sun has used up the hydrogen in its core, it will inflate and turn into a red giant star. This phase of its life—and that of other stars up to twice its mass—is relatively short compared ...
Astronomy
Oct 29, 2019
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Red giants are dying stars, in advanced stages of stellar evolution, which have depleted the hydrogen in their cores. In a study published today in Nature Communications, a team of astronomers mainly from Instituto de Astrofísica ...
Astronomy
Dec 16, 2022
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Stars in globular clusters are generally extremely old, with ages of 12-13 billion years. However, a small fraction of them appear to be significantly younger than the average population and, because they seem to have been ...
Astronomy
Dec 23, 2009
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Two Earth-sized planets have been discovered circling a dying star that has passed the red giant stage. Because of their close orbits, the planets must have been engulfed by their star while it swelled up to many times its ...
Astronomy
Dec 21, 2011
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Scientists at the Institute of Astrophysics of the Canaries (IAC), together with collaborators at the Centre of Astrobiology (CAB) and the Polytechnic University of Cartagena (UPCT), have obtained an image of a giant planet ...
Astronomy
May 13, 2015
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Some of the sharpest images ever made with ESO's Very Large Telescope have, for the first time, revealed what appears to be an ageing star giving birth to a butterfly-like planetary nebula. These observations of the red giant ...
Astronomy
Jun 10, 2015
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New computer simulations from the Georgia Institute of Technology provide a conclusive test for a hypothesis of why the center of the Milky Way appears to be filled with young stars but has very few old ones. According to ...
Astronomy
Jun 7, 2016
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A new study from North Carolina State University, the Smithsonian and Duke University finds that bamboo lemurs, giant pandas and red pandas share 48 gut microbes in common - despite the fact that they are separated by millions ...
Plants & Animals
Dec 6, 2017
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80
A fresh look at red giant stars offers key insights into cosmic distance measurements and a way to measure the universe's expansion with the highest accuracy.
Astronomy
Mar 15, 2024
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A team of researchers affiliated with several institutions in Spain and one in France has built what they call their Stardust machine—a device that mimics the activity around a red giant where real stardust forms. In their ...
