knowledge Quotes

Mars once was wet and fertile. It's now bone dry. Something bad happened on Mars. I want to know what happened on Mars so that we may prevent it from happening here on Earth.

It turns out our brain is sensitive, maybe too sensitive, to motion. It's a survival mechanism.

Not enough people in this world, I think, carry a cosmic perspective with them. It could be life-changing.

People credit me for making the universe interesting when in fact the universe is inherently interesting, and I'm merely revealing that fact. I don't think I'm anything special for this to happen.

There's something about witnessing something in the sky that makes people think they're seeing something unique or special. I don't really understand the psychology of it, to be honest.

All the nine-planet people out there: Get over it. There's eight.

I always try to get people a different outlook. When you do that, people take ownership of the information. They don't ever have to reference me because, I'd like to believe as an educator, I'm empowering them to have those thoughts themselves.

It may be that our cosmic curiosity... is a genetically-encoded force that we illuminate when we look up and wonder.

I'm fascinated by the deaths of stars and the havoc they wreak on their environments.

The theory of evolution, like the theory of gravity, is a scientific fact.