All inquires carry with them some element of risk. There is no guarantee that the universe will conform to our predispositions.

All of the rocky and metallic material we stand on, the iron in our blood, the calcium in our teeth, the carbon in our genes were produced billions of years ago in the interior of a red giant star. We are made of star stuff.

When we look up at night and view the stars, everything we see is shinning because of distant nuclear fusion.

Extraordinary observations require extraordinary evidence to make them believable.

Any civilization that doesn't develop space travel dies.

It is clear that the nations of the world now can only rise and fall together. It is not a question of one nation winning at the expense of another. We must all help one another or all perish together.

Modern science has been a voyage into the unknown, with a lesson in humility waiting at every stop. Many passengers would rather have stayed home.