SUNSET: 
What — and Where — Is the North Polar Spur?
Astronomers make the case that a gigantic ridge of gas sticking out of the galactic plane was blown out by a cluster of nearby supernovae.
The Black Hole Files with Camille Carlisle
Bubbles, Heated Clouds Point to Active Past for Galactic Center
Two studies support the suspicion that our galaxy’s black hole had one or more outbursts a few million years ago.
Galactic Bubbles Spark Debate
New microwave and radio observations resurrect controversy over gigantic lobes seen ballooning from the Milky Way’s center.
Milky Way Blew Bubbles
A careful analysis of Planck observations shows that there really is a mysterious haze emanating from the Milky Way’s core, mission team members say.
Milky Way's Black Hole Once Active
Evidence continues to mount that our galaxy's supermassive black hole was not always the quiet neighbor it is now.
Why is the Milky Way Blowing Bubbles?
Using gamma-ray eyes on NASA's Fermi spacecraft, astronomers now see that our home galaxy sports a matched pair of enormous and recently formed bubbles. It's a mystery how and why they formed.
