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Stellar Evolution

In Wildly Different Environments, Stars End Up Roughly the Same

When you look at a region of the sky where stars are born, you see a cloud of gas...

Thanks to Gaia we Know Exactly how and When the Sun Will die

Our Sun is doomed. Billions of years from now, the Sun will deplete its hydrogen fuel and swell...

When Stars eat Their Planets, the Carnage can be Seen Billions of Years Later

The vast majority of stars have planets. We know that from observations of exoplanetary systems. We also...

A Dormant Black Hole has Been Discovered Just Outside the Milky Way

What happens when a massive star dies? Conventional wisdom (and observational evidence) say that it can collapse to form...

Red Supergiant Stars Bubble and Froth so Much That Their Position in the Sky Seems to Dance Around

Making a 3D map of our galaxy would be easier if some stars behaved long enough to get good...

Astronomers Caught Betelgeuse Just Before it Started Dimming and Might Have Seen a Pressure Wave Rippling Through its Atmosphere

A couple of years ago, Betelgeuse generated much interest when it started dimming. That caught the attention of...

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