Rond en rond een beetje geweer black holes and time backup Kapper Farmacologie
Black Hole Warps Space so Much That Astronomers See Light Behind It
LIGO detects merging black holes for third time | MIT News | Massachusetts Institute of Technology
How to Measure the Spin of a Black Hole | NASA
What are Black Holes: The Journey From Theory to Reality
general relativity - What does spacetime look like near a black hole? - Physics Stack Exchange
Does time stand still inside a black hole? - Ask an Astronomer
Astronomers think they've just spotted an 'invisible' black hole for the first time
Nonfiction Book Review: Black Holes and Time Warps: Einstein's Outrageous Legacy by Kip S. Thorne, Author, Stephen Hawking, Introduction by W. W. Norton & Company $30 (619p) ISBN 978-0-393-03505-6
Theoretical Physicist Solves How Universe is Reflected near Black Hole | Sci-News.com