Dark matter and dark energy are two things we measure in the universe that are making things happen, and we have no idea what the cause is.
Neil deGrasse TysonWe are part of this universe; we are in this universe, but perhaps more important than both of those facts, is that the universe is in us.
Neil deGrasse TysonThe more I learn about the universe, the less convinced I am that there's any sort of benevolent force that has anything to do with it, at all.
Neil deGrasse TysonI believe that the manned space program can engage the public by advancing the space frontier. Every next mission takes you farther out in space than you were before, either technologically or in terms of distance.
Neil deGrasse TysonWhen I was a kid, I thought that if everyone looked up the way I did then everyone would want to study the universe just like me - how could they not? This naiveté is what tells me that my interest was more a calling than a rational comparative assessment about what to be when I grew up.
Neil deGrasse Tyson