The Cosmos Up Close

摘要

Celestial distances are so enormous that nobody can be faulted for regarding astronomy as the study of things far, far away and long, long ago. Until the era of Galileo and Newton, people generally regarded the heavens and Earth as two separate entities. The recognition that we are intertwined with the rest of the universe is quite modern―and scientists are still learning how tightly life down here is linked with events going on up there.