“On Mars, where the air is spare - a hundred times less dense than on E...” — Seth Shostak Quote

“On Mars, where the air is spare - a hundred times less dense than on Earth - someone could hear you scream. But you'd have to really strain to get anyone's attention. On the Red Planet, where the wind is high-pitched and faint, even a symphony orchestra will sound as thin as cheap gruel.”

“The planets and moons of our solar system are blatantly visible because they reflect sunlight. Without the nearby Sun, these planets would be cryptic and dark on the sky.”

“Consider that the overwhelming majority of those 40,000 near-Earth asteroids are small enough to fit on the parking lot at the mall. And while these rocky runts won't cause Armageddon, they could still flatten such popular hominid hangouts as Manhattan or downtown Des Moines.”

“I am able to compete not because my labour is cheap, but because I can use technology better than others.”

“I was a cheap criminal; I did many, many wrongs. I admit that. Of course, if I could tell each person I'm sorry, I would.”

“You have to have a lot of money to go to college. It's not cheap.”