"In Search of Earth 2.0" --James Webb Space Telescope Will Focus 0n Exoplanet Atmospheres (WATCH Today's 'Galaxy' Stream)

"In the future," says Penn State's Natasha Batalha, "there will be a push to characterize the first Earth 2.0. If we don't nail this down now and master the art of characterizing exo-atmospheres, we will never accurately characterize Earth 2.0."...