Stellar Evolution

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 a…

3 weeks ago

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 distances…

1 month ago

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 astronomers worldwide,…

2 months ago

Slimmed Down Red Giants Had Their Mass Stolen By a Companion Star

Millions of stars that can grow up to 620 million miles in diameter, known as 'red giants,' exist in our…

4 months ago

A Second Generation of Planets can Form Around a Dying Star

When young stars coalesce out of a cloud of molecular hydrogen, a disk of leftover material called a protoplanetary disk…

6 months ago

Astronomers Watch a Star Die and Then Explode as a Supernova

It's another first for astronomy. For the first time, a team of astronomers have imaged in real-time as a red…

7 months ago

Giant Stars and the Ultimate Fate of the Sun

Astronomers have a new tool to help them understand giant stars. It's a detailed study of the precise temperatures and…

8 months ago

NASA Simulation Shows What Happens When Stars Get Too Close to Black Holes

What happens to a star when it strays too close to a monster black hole? Astronomers have wondered why some…

8 months ago

Quick Action Let Hubble Watch the Earliest Stages of an Unfolding Supernova Detonation

If it weren't for supernova remnants we wouldn't have much knowledge of supernovae themselves. If a supernova explosion is the…

9 months ago

Newly Forming Stars Don’t Blast Away Material as Previously Believed. So Why Do They Stop Growing?

We thought we understood how stars are formed. It turns out, we don't. Not completely, anyway. A new study, recently…

1 year ago