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"We use our own solar system and all we know about its incredible diversity of fascinating worlds like our Rosetta Stone," said co-author Lisa Kaltenegger, badociate professor of astronomy and director of the University of California. Carl Sagan Institute. "With this catalog of fingerprints, we will be able to compare new observations of exoplanets to objects from our own solar system – including the gaseous worlds of Jupiter and Saturn, the icy worlds of Europe, the volcanic world of Io and ours, planet filled with life. "
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