I have thoughts every day that are themselves tweets.

As important as the civil rights movement was, I think what will rise to the top is that we left Earth in that time.

All of the full moons for the entire year are special in that they have particular names.

Ever since there have been people, there have been explorers, looking in places where other hadn't been before. Not everyone does it, but we are part of a species where some members of the species do, to the benefit of us all.

If the purpose of the universe was to create humans then the cosmos was embarrassingly inefficient about it.

If a scientist is not befuddled by what they're looking at, then they're not a research scientist.

Science is not there for you to cherry pick ... You can decide whether or not to believe in it but that doesn’t change the reality of an emergent scientific truth.