A common way to compute density is, of course, to take the ratio of an object's mass to its volume. But other types of densities exist, such as the resistance of somebody's brain to the imparting of common sense.
Neil deGrasse TysonWith automatic spell checkers running unleashed over what we compose, our era is that of correctly spelled typos.
Neil deGrasse TysonThere are two ways you can receive energy from your environment: One is molecules bumping against you. That's the air. The other is radiative energy. That's what you're feeling from the sun. When they say "Get out of the sun, out of the heat," the air is the same temperature; it's just you're exposed to sunlight.
Neil deGrasse TysonIn the movie, the stars above the ship bear no correspondence to any constellations in a real sky. Worse yet, while the heroine bobs... we are treated to her view of this Hollywood sky-one where the stars on the right half of the scene trace the mirror image of the stars in the left half. How lazy can you get?
Neil deGrasse TysonTypically, when you look for role models, you want someone who has your interests and came from the same background. Well, look how restricting that is. What people should do is take role models a la carte. If there's someone whose character you appreciated, you respect that trait.
Neil deGrasse Tyson