we ought to know all the 8 planets well. They're our closest guideposts to figure out what's possible in the broader universe
And also knowing the coming gaps in planetary exploration missions. After Cassini, we'll have Juno. But then, it'll be years before anotherhttps://twitter.com/B_resnick/status/908489660573392896 …
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it sounds dorky. But imagine knowing the only set of encyclopedias in existence were across an ocean. Wouldn't you want to build a boat?
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the encyclopedias are the planets, their moons, all the worlds in our solar system.
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