In 5 billion years, the expansion of the universe will have progressed to the point where all other galaxies will have receded beyond detection.

There are a lot of legislators who are afraid that kids will learn science and lose their faith.

I cannot stress often enough that what science is all about is not proving things to be true but proving them to be false.

Empirical explorations ultimately change our understanding of which questions are important and fruitful and which are not.

In 5 billion years, the expansion of the universe will have progressed to the point where all other galaxies will have receded beyond detection. Indeed, they will be receding faster than the speed of light, so detection will be impossible. Future civilizations will discover science and all its laws, and never know about other galaxies or the cosmic background radiation. They will inevitably come to the wrong conclusion about the universe......We live in a special time, the only time, where we can observationally verify that we live in a special time.

The purpose of education is not to validate ignorance but to overcome it.

If our species is to survive, our future will probably require outposts beyond our own planet.