85 percent of the gravity of the universe has a point of origin about which we know nothing.
Neil deGrasse TysonIf aliens did visit us, I'd be embarrassed to tell them we still dig fossil fuels from the ground as a source of energy.
Neil deGrasse TysonAnd extracting one molecule's signature in spectral analysis from the rest of the signatures is hard work, sort of like picking out the sound of your toddler's voice in a roomful of screaming children during playtime. It's hard, but you can do it.
Neil deGrasse TysonAnyone who has wrestled knows that it's the hardest thing in the world to do. Anyone who says something else is the hardest thing has never wrestled. That's what I have found. ... You don't wrestle because it's easy, you wrestle because it's hard. I don't do astrophysics because it's easy, I do it because it's hard. And I juxtapose the two in my mind, body, and soul all the time.
Neil deGrasse TysonThose who see the cosmic perspective as a depressing outlook, they really need to reassess how they think about the world. Because when I look up in the universe, I know I'm small but I'm also big. I'm big because I'm connected to the universe and the universe is connected to me.
Neil deGrasse Tyson