During one of the Apollo missions, I saw Walter Cronkite showing off the flight plan. It just mesmerized me. All this detail! That's what I wanted.

The air conditioning was off. The flight controllers were sitting there wiping sweat.

Pluto is still active four and a half billion years into its history. It was expected that small planets like Pluto would cool off long ago and not still be showing geological activity. Pluto is, in fact, showing numerous examples of geological activity on a massive scale across the planet.

The basic story for Golden Spike is that we discovered a way to create do-it-yourself Apollo programs for other countries.

A miniature poodle is not not a dog just because it's miniature.

When we first sent missions to Jupiter, no one expected to find moons that would have active volcanoes. And I could go down a long list of how often I've been surprised by the richness of nature.