Black holes

Black holes Free Videos
What is a black hole? Why did it take two years to develop the photos?
Anecdote
7.2
01:24
What is a black hole? Why did it take two years to develop the photos?
How black holes are observed and corrected in the previous video (with subtitles).
Anecdote
7.2
06:49
How black holes are observed and corrected in the previous video (with subtitles).