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The underground ocean on Saturn’s icy moon may contain phosphorus in concentrations thousands of times greater than those found in Earth’s ocean.

Understanding how life survives in extreme Earth environments could point to ways life can survive on other worlds. Astrobiologist Morgan Cable talks to host Emily Kwong about how her missions here on Earth have guided two upcoming NASA missions in search for alien life, not in a far off galaxy, but here in our solar system. The Titan Dragonfly and the Europa Clipper missions will each explore an ocean world in our solar system, where scientists believe we could find life--life that may be unlike anything we've seen before. Today on Short Wave, life as we know it - and life as we don't know it...

Among Trillions of Planets, Are We 'Home Alone?' In a galaxy that likely holds trillions of planets, ours is so far the only known life-bearing world. Are we really alone? more Life in the Universe: What are the Odds? We don't know when, or even if, we'll find life beyond Earth, but NASA scientists continue the hunt among the thousands of exoplanets confirmed in the galaxy so far. more What's Out There? The Exoplanet Sky So Far We've confirmed only a few thousand of the galaxy's exoplanets, which probably number in the trillions – and already, the variety is stunning.