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Discoveries Spotlight Moons and Distant Planets
Five years into exoplanet finds scientists report over 30 worlds beyond our solar system, mostly hot gas giants. In March two smaller than Saturn were found, NASA plans the Terrestrial Planet Finder in a decade to seek Earth sized life friendly worlds. Galileo probes reveal Jupiter’s moons Io Europa Ganymede Callisto with varied activity oceans craters and age. Europa may harbor liquid water and energy sources, raising life prospects while Ganymede outsizes Mercury and Callisto bears ancient crusts.
MENTIONED IN THIS ARTICLE
Jupiter
Saturn
NASA
Galileo
Galileo Galilei
Solar System
Europa
Earth
Mars
Mars Global Surveyor
Polar Caps