"A star does not evolve over its lifetime through each spectral type, as Russell once thought; rather, each star exper…"

"After the nuclear fuel is used up, the star goes into a state of gravitational collapse. All parts of the star fall m…"

""Schwarzschild's solution"—revealed a stunning implication of general relativity. He showed that if the mass of a sta…"

"Black holes have the universe's most inscrutable poker faces. ...When you've seen one black hole with a given mass, c…"

"A natural guess is that... a black hole's entropy is... proportional to its volume. But in the 1970s and Stephen Hawk…"

"[F]or a physicist, the upper limit to entropy... is a critical, almost sacred quantity. ...the Bekenstein and Hawking…"

"The subject of this book is the structure of space-time on length-scales from 10-13 cm, the radius of an elementary p…"

"I'm sorry to disappoint science fiction fans, but if information is preserved, there is no possibility of using black…"

"Black holes ain't as black as they are painted. They are not the eternal prisons they were once thought. Things can g…"

"It is hard to understand how this infinitely dense singularity can evaporate into nothing. For matter inside the blac…"