Stars
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 and…
Why Betelgeuse Dimmed
Using data from Hubble and other observatories, a team of scientists have determine the cause of Betelgeuse's dimming - old…
When Stars eat Their Planets, the Carnage can be Seen Billions of Years Later
Lithium is the key to determining whether a star has eaten a planet.
A Fast-Moving Star is Colliding With Interstellar gas, Creating a Spectacular bow Shock
A star speeding through gas and dust has much to teach us about interstellar dynamics.
Astronomers Have a New Way to Find Exoplanets in Cataclysmic Binary Systems
Have you heard of LU Camelopardalis, QZ Serpentis, V1007 Herculis and BK Lyncis? No, they're not members of a boy…
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…
One Star Flies Past the Milky Way’s Black Hole at 3% the Speed of Light
There's a population of stars in the heart of our galaxy whipping around Sagittarius A* (the Milky Way's central supermassive…
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…
This is How You Get Multiple Star Systems
Stars form inside massive clouds of gas and dust called molecular clouds. The Nebular Hypothesis explains how that happens. According…
A Star has Grown Spiral Arms
Astronomers using the ALMA Observatory have discovered an unusual, massive star near the center of our galaxy, a star that…