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.
タグ: like, long, history, cool

"Alan Stern"の他の名言

If two billion people wanted to watch a robot fly by Pluto, imagine what it will be like when the first humans step on Mars. It'll be the most unifying event anybody could ever put on.
タグ: will, step, people, fly
If the Pluto mission was a cat, then it would've been dead long ago because they only get nine lives, and we've had significantly more than nine stoppages and odd twists and turns.
タグ: only, dead, more, long
The Kuiper belt region, which I call the third zone because it lies beyond the rocky terrestrial planets and beyond the giant planets, is a bizarre frontier.
タグ: call, which, because, beyond
Just speaking for myself, I think the return of people to the Moon has a lot to offer for understanding the formation and evolution of terrestrial worlds; so would the exploration of near-Earth asteroids by people.
タグ: think, moon, people, myself
Having a diverse suite of U.S.-manned spaceflight systems to access space is inherently robust.
タグ: systems, robust, having, space
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