Space science planners at NASA are considering a closer look at two of Jupiter's moons - Europa and Io - once the probe completes its initial two- year tour of the planet's system, the head of the U.S. agency's space science said. Wesley T. Huntress Jr., associate administrator for space science, told the Washington Space Business roundtable Wednesday that tantalizing evidence of liquid water in the first Galileo photos of Europa make the moon attractive as another spot in the ...

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