Hundreds of billions of stars in our galaxy and yet we only know of one that shines on a life filled planet. Is Earth unique? Or are there other solar systems and planets like ours... out there? Now, scientists are finding the answer. Thanks to this, the Kepler space telescope, the most powerful planet hunter ever built. It';s making astonishing discoveries. From enormous gas giants, to a land where the sun never sets. To worlds that may be entirely covered in water, Kepler is even finding planets like our own. Scientists are beginning to wonder if those planets could be inhabited... and if so by what?
It's fun to speculate about life, but any life is going to be subject to the laws of chemistry and physics. Even on other planets we can see how biology can adapt.