The potentially rocky exoplanet is K2-18b, which lies 111 light-years from Earth in the constellation Leo. It was discovered in 2015 by researchers using NASA's prolific Kepler space telescope. read more
A Super-Earth is a rocky planet with a mass higher than Earth's but substantially less than our solar systems smaller gas giants with 15 to 17 Earth masses. The number of discovered super-Earths has been steadily rising so that one can say that they seem to be quite common in the solar systems of our universe. read more
Three of the newly confirmed exoplanets were found to orbit within habitable zones of their related stars: two of the three, Kepler-438b and Kepler-442b, are near-Earth-size and likely rocky; the third, Kepler-440b, is a super-Earth. read more