galaxy
How Do Galaxies Die?
Everything eventually dies, even galaxies. So how does that happen? Time to come to grips with our galactic mortality. Not…
Hubble Captures a Collision in a Black Hole’s “Death Star” Beam
Even the Empire's planet-blasting battle station has nothing compared to the immense energy being fired from the heart of NGC 3862, a supermassive black…
Astronomy Cast Ep. 365: Gaia
The European Gaia spacecraft launched about a year ago with the ambitious goal of mapping one billion years in the…
Why Is Our Galaxy Called The Milky Way?
We have a lot of crazy informal names for space sights. Sometimes they're named after how they are shaped, like…
How Big Is The Milky Way?
The Milky Way is our home galaxy, the spot where the Earth resides. We are not anywhere near the center…
One of the Milky Way’s Arms Might Encircle the Entire Galaxy
Given that our Solar System sits inside the Milky Way Galaxy, getting a clear picture of what it looks like…
Weekly Space Hangout – Dec. 19, 2014: Methane on Mars!
Host: Fraser Cain (@fcain) Guests: Morgan Rehnberg (cosmicchatter.org / @cosmic_chatter) Ramin Skibba (@raminskibba) Alessondra Springmann (@sondy) (more…)
Why Is Space Black?
Since there are stars and galaxies in all directions, why is space black? Shouldn't there be a star in every…
New Signal May Be Evidence of Dark Matter, Say Researchers
Dark matter is the architect of large-scale cosmic structure and the engine behind proper rotation of galaxies. It's an indispensable part…
Sail Past Orion to the Outer Limits of the Milky Way
Several nights ago the chill of interstellar space refrigerated the countryside as temperatures fell well below zero. That didn't discourage…