Discovery News | 'Habitable' Super-Earth Gliese 581d Might Exist After All Discovery News Despite having discovered nearly 2,000 alien worlds beyond our solar system, the profound search for exoplanets — a quest focused on finding a true Earth analog — is still in its infancy. It is therefore not surprising that some exoplanet discoveries aren't … Potentially-Habitable Super-Earth Once Discarded As Just 'Noise' Exists After All |