(from New Scientist) http://exoplanets.newscientistapps.com/
A fabulous interactive way of looking at 'How many Earths are out there'. Well worth the visit.
It describes the Kepler planet-finding mission in an easy graphical format and answers the question, "How many earth-like planets are out there?"
Looking up at the night sky, it's hard not to wonder how many other planets might be circling those pinpricks of light – and how many are home to beings gazing back at us.
Today, we are starting to get a handle on the number of roughly Earth-sized exoplanets that might be suitable for life.
Clck the link to explore our universe for Earth like planets......