Scientists have been finding exoplanets that could be potentially habitable for some time. Now there are hundreds of millions of them out there and more found every day. There isn't a planet like our earth anywhere in the universe that we know. Now scientists say they have found exoplanets that could be more habitable than the earth, but do they really exist?
An exoplanet or extrasolar planet is any planet that orbits around a star outside of our solar system. Exoplanets can range in size from a small rocky planet like Mars and Earth to a gas giant larger than Jupiter. Most of the planets that have been discovered lie in a small region of the milky way galaxy and we know from observations made by NASA's Kepler space telescope mission.