The most accessible field in science, from the point of view of language, is astrophysics. What do you call spots on the sun? Sunspots. Regions of space you fall into and you donโt come out of? Black holes. Big red stars? Red giants. So I take my fellow scientists to task. Heโll use his word, and if I understand it, Iโll say, โOh, does that mean da-da-da-de-da?
Neil deGrasse TysonPerhaps weโve never been visited by aliens because they have looked upon earth and decided thereโs no sign of intelligent life.
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 Tyson