You can deceive yourself into thinking that America is a technological leader, but if you don't see what anyone else is doing you have no accurate assessment - you can't make an accurate assessment of where you fit and why. I consider our moving frontier in space as the anecdote to that downward trend.
Neil deGrasse TysonWhat are you doing? Why are you concerning yourself with the meaning of meaning?
Neil deGrasse TysonIf you get asteroids about a kilometer in size, those are large enough and carry enough energy into our system to disrupt transportation, communication, the food chains, and that can be a really bad day on Earth.
Neil deGrasse TysonThe day we stop exploring is the day we commit ourselves to live in a stagnant world, devoid of curiosity, empty of dreams.
Neil deGrasse TysonOur entire universe emerged from a point smaller than a single atom. Space itself exploded in a cosmic fire, launching the expansion of the universe and giving birth to all the energy and all the matter we know today. I know that sounds crazy, but thereโs strong observational evidence to support the Big Bang theory. And it includes the amount of helium in the cosmos and the glow of radio waves left over from the explosion.
Neil deGrasse Tyson