Tags: galaxies

What happens when galaxies collide?

Paul Sutter is an astrophysicist at The Ohio State University and the chief scientist at COSI Science Center . Sutter is also host of Ask a Spaceman , RealSpace ,...

Dead Galaxies Indebted to Dark Matter

Seven to 10 billion years ago, a bunch of galaxies fell in with a bad crowd at the Coma cluster — a galactic group comprising thousands of their ilk. That...