Unfortunately, the day we land on an alien world and finally shake hands with our interstellar neighbors is probably still a ways off. We haven't been back to the moon since Apollo and landing a rover on Mars was the highlight of our space program's last decade. And though that's nothing to shake a stick at, it's not quite traveling to Earth's twin, light-years away.
Lucky for us, however, we may be able to take a sneak peak at what we might find by looking right here on Earth...well, in some really uncomfortable places on Earth. Take a look at the ten most extreme extremophiles, or animals that live in extremely un-life-friendly places, and get a glimpse at the closest thing we may find to a real life alien...
http://www.cosmosmagazine.com/planets-galaxies/alien-life/living-edge/
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