It would be disappointing and surprising if Earth were the only template for habitability in the Universe.
Once we discover alien life out there, humanity will never be the same.
Are we alone in the universe? NASA's exploration of TRAPPIST-1 has the potential to answer one of humanity's deepest questions.
NASA has turned to the internet for help in naming the newly discovered Trappist-1 exoplanets.
TRAPPIST-1 is 40 light years from Earth. It would take us millions of years to get there.