A young star with planets forming, illustrated here, may retain chemical clues about the worlds that surround it. ESO/L. CalçadaFrom Discover Magazine:
Astronomers Discover 2 Shortcuts for Locating Earth-Like Planets.
Since the discovery of planets outside our solar system in the 1990s, astronomers have tallied more than 400 extrasolar worlds, many unlike anything known before. Two recent studies show that the formation of planets may leave detectable chemical signatures in their host stars, a finding that could help scientists zero in on planetary systems even more quickly and speed the search for worlds similar to Earth.
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