NASA's Kepler spacecraft is gearing up for its mission to fimd Earth-like planets in orbits similar to Earth's. It has already detected a "hot Jupiter" already discovered, which encourages the team running the mission that the probe is functioning well.
By monitoring 100,000 stars over several years, NASA hopes Kepler will find at least 50 Earth-like planets orbiting their suns at distances which would make life on those worlds a possibility. If such worlds are found, the case for life being abundant in the universe will be strengthened. If no such worlds are found, that too could say something important about life.
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