What Is a Black Hole? Here’s Our Guide for Earthlings Welcome to the place of no return — a region in space where the gravitational pull is so strong that not even light can escape it. This is a black hole. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Mars in pictures: NASA shares stunning images of the red planetSHOCK QUANTUM THEORY: The future is affecting the PASTMars move OFF? Researchers find DEADLY bacteria on Red PlanetSpace secret: USA could have beaten USSR into space by A YEAR (but White House dithered)Studying Sharks, Up Close and PersonalQ&A: Putting the Compression in Compressed Air