

The Search for Exoplanets: What Astronomers Know
Doppler and Transit Planet-Finding Methods
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S1 • E3 Sep 23, 2015 30mExplore two other indirect approaches for finding exoplanets: first, by measuring the Doppler shift in the color of a star due to the pull of an unseen orbiting planet; and second, by measuring the tiny drop in the brightness of a star as a planet transits in front of it.