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exoplanet – n. a planet that orbits a star other than our sun
galaxy – n. any one of a very large group of stars that make up our universe
guess – n. an opinion or answer on something you do not know much about
astounding – adj. causing a feeling of great surprise or wonder
concrete – adj. solid, like the hard strong material of concrete
wobble – n. a very small movement
habitable – adj. something than can support life
