You should appreciate the hazards of encountering a black hole unawares. A black hole is invisible in the absence of any tracers, just darkness against darkness. You may well not realize the threat before your fate is secured. You must carry a powerful light source to reveal in backlight the clandestine black hole, an unilluminated disk, an absence in a bright world.
Janna Levin on Extra Dimensions, Time Travel, and How to Overcome Boots in the Face (#445)
“I used to resent obstacles along the path, thinking, ‘If only that hadn’t happened, life would be so good.’ Then I suddenly realized, life is the obstacles. There is no underlying path.” — Janna Levin Janna Levin (@jannalevin) is the Tow Professor of Physics and Astronomy at Barnard College of Columbia University. She has contributed …
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