NASA celebrates its 2nd annual Black Hole Friday. The government agency shared numerous images and information related to the black hole on of black Friday. It also tweeted several images which got more than 1,000 re-tweets.
A black hole is an area of space time from where even light cannot escape due to the strong gravitational attraction. It is considered as the most mysterious and strange object of the outer space. Albert Einstein was the first one to present the idea of Black hole in his general theory of relativity...
20:08 Month in Space: November 201615