In the news this week: Globular clusters have the detailed scoop on our galaxy's past, and a "heartbeat" black hole binary in the Milky Way has gone mysteriously dim.
Thousands of stars that once belonged to an ancient galaxy are inside our own.
Astronomers have released a new, extremely detailed three-dimensional census of our Milky Way galaxy.
New research shows stellar flybys are common in our galaxy’s crowded center. That could have both good and bad (but mostly bad) effects on growing planets.
The 30-degree circular arc is likely a shock front expanding from a star that exploded some 100,000 years ago.
Astronomers have known for decades that our galaxy is warped. Now, they can follow the warp’s rotation as it travels around the galactic center.
Two studies support the suspicion that our galaxy’s black hole had one or more outbursts a few million years ago.