knowledge Quotes

Where there's water on Earth, you find life as we know it. So if you find water somewhere else, it becomes a remarkable draw to look closer to see if life of any kind is there, even if it's bacterial, which would be extraordinary for the field of biology.

No one is dumb who is curious. The people who don't ask questions remain clueless throughout their lives.

Venus has a runaway greenhouse effect. I kind of want to know what happened there because we're twirling knobs here on Earth without knowing the consequences of it. Mars once had running water. It's bone dry today. Something bad happened there as well.

Not enough books focus on how a culture responds to radically new ideas or discovery. Especially in the biography genre, they tend to focus on all the sordid details in the life of the person who made the discovery. I find this path to be voyeuristic but not enlightening.

'Boldly going where hundreds have gone before' does not make headlines.

I'm baffled all the time. We don't know what's driving 96% of the universe. Everybody you know and love and heard of and think about and see in the night sky through a telescope: four percent of the universe.

I'm often asked - and occasionally in an accusatory way - 'Are you atheist?' And it's like, 'You know, the only 'ist' I am is a scientist, all right?' I don't associate with movements. I'm not an 'ism.' I just - I think for myself.

If you slid Pluto to where Earth is right now, heat from the sun would evaporate that ice, and it would grow a tail. Now that's no kind of behavior for a planet.

You can't come away with this cosmic perspective thinking that you are better than others and want to fight. That's why you'll never have astrophysicists leading nations into war.

Pluto's orbit is so elongated that it crosses the orbit of another planet. Now that's... you've got no business doing that if you want to call yourself a planet. Come on, now! There's something especially transgressive about that.