What if...Water and Breathable Air...What then?

Suppose one of our current missions finds water on another solar body, be it
a planet or a moon. And let's suppose it also finds near breathable, or
breathable air somewhere. That would be very exciting, but in reality how
would we handle it? Let's say Cassini find one of Saturn's moons to be a
darker, colder version of earth. Do you think NASA would immediately set up
a manned mission? send settlers out?

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BV.
www.iheartmypond.com