Black holes are, of course, awesome. But, for scientists, they are more awesome. If a rainbow is marvellous, then understanding how all the colors of the rainbow are present, unified, in ordinary white light—that’s more marvellous.
A century ago, physics breakthroughs came in rapid sequence. There was quantum mechanics and Einstein’s theories of space and time, lots of new particles, two new nuclear forces, and eventually the standard model of particle physics. This progress and its technological applications commanded respect, if not outright fear.
In 1967, the physicist John Wheeler was giving a lecture about a mysterious and startling phenomenon in deep space that the field was just beginning to understand.
