If each dead person became a ghost, there'd be more than 100 billion of them haunting us all. Creepy, but cool.
Neil deGrasse TysonOne thing in life is for certain, the more profoundly baffled you have been in your life, the more open your mind becomes to new ideas.
Neil deGrasse Tyson85 percent of the gravity of the universe has a point of origin about which we know nothing.
Neil deGrasse TysonItโs short-sighted to think ads wonโt one day end up wherever humans are - even the moon.
Neil deGrasse Tyson'As a fraction of your tax dollar today, what is the total cost of all spaceborne telescopes, planetary probes, the rovers on Mars, the International Space Station, the space shuttle, telescopes yet to orbit, and missions yet to fly?' Answer: one-half of one percent of each tax dollar. Half a penny. I'd prefer it were more: perhaps two cents on the dollar. Even during the storied Apollo era, peak NASA spending amounted to little more than four cents on the tax dollar.
Neil deGrasse Tyson