A state of negative energy means that you are essentially getting something for nothing.
Neil deGrasse TysonWe went to the moon using just Newton's laws of motion and gravity. Newtonian dynamics we call it. So then we find out, "Well, this works because there's certain regimes we've never tested it in." Had we done so, we would show that it didn't work: For example, at very high speeds, very high gravity, Newton's laws fail. They just fail. You need Einstein's laws of motion and gravity. Those would be his special theory of relativity and general theory of relativity. Now you invoke those and it works.
Neil deGrasse TysonSome of the greatest poetry is revealing to the reader the beauty in something that was so simple you had taken it for granted.
Neil deGrasse TysonThe universe has really never made things in ones. The Earth is special and everything else is different? No, weโve got seven other planets. The sun? No, the sun is one of those dots in the night sky. The Milky Way? No, itโs one of a hundred billion galaxies. And the universe - maybe itโs countless other universes.
Neil deGrasse Tyson