The first website (1), created by the Department of Physics at Syracuse University, provides an educational, easily understandable explanation of the characteristics of a black hole. Students can learn the consequences a spacecraft would face if it traveled near or through the horizon of a black hole. The next website (2 ), created by the Amazing Space education group of the Space Telescope...

A black hole is a dense, massive region of space that exerts inescapable gravitational pull on other objects. Formation of a black hole is an extremely important event in a galaxy's origin and evolution, and a black hole's size can indicate the age of the galaxy that surrounds it. Recent discoveries by astrophysicists are shedding light on how black holes form and behave during their existence....

Black holes, "the most enigmatic and exotic objects in the universe," are the subject of this new two-hour episode of PBS's NOVA, aired on January 10, 2018. Hosted by astrophysicist Janna Levin, this documentary explores how black holes were discovered and how these strange phenomena may have shaped our universe. Along the way, viewers are introduced to Karl Schwarzschild, the astronomer who...