NASA has spin-offs, and it's a huge and very impressive list, including accurate and affordable LASIK eye surgery.

And I don't care what else anyone has ever told you, the Sun is white, not yellow. Human color perception is a complicated business, but if the Sun were yellow, like a yellow lightbulb, then white stuff such as snow would reflect this light and appear yellow-a snow condition confirmed to happen only near fire hydrants.

Facts are true whether or not you believe them.

If we're going to affect policy, or affect attitudes, for me, the adults have always been the target population.

Dark matter and dark energy are two things we measure in the universe that are making things happen, and we have no idea what the cause is.

The methods and tools of science perennially breach barriers, granting me confidence that our epic march of insight into the operations of nature will continue without end.

I'd bet almost anything that life from another planet, if formed independently from life on Earth, would be more different from all species of Earth life than any two species of Earth life are from each other.