... informed ignorance provides the natural state of mind for research scientists at the ever-shifting frontiers of knowledge. People who believe themselves ignorant of nothing have neither looked for, nor stumbled upon, the boundary between what is known and unknown in the cosmos.

You know, dark matter matters.

For me, the most fascinating interface is Twitter. I have odd cosmic thoughts every day and I realized I could hold them to myself or share them with people who might be interested.

How much would you pay...for the Universe?

Space exploration is a force of nature unto itself that no other force in society can rival.

I was born the same week NASA was founded, so we're the same age and feel some of the same pains, joys, and frustrations.

For centuries, magicians have intuitively taken advantage of the inner workings of our brains.