So, is this exploring? Maybe not. Maybe the only real exploring left is in the interior of Europa, or the clouds of Saturn, or on the surface of Venus, or the far side of the universe. Certainly there is exploration of this sort left, into the truly unknown—though by the time we get to these places in person, we’ll know them well too. They will be mapped. But here’s my point: If it’s unknown to you, then aren’t you exploring?
