Search starlight to help astronomers discover new exoplanets

NASA's Goddard Space Flight Center

THIS month I am escaping from Earth and joining astronomers in their search for undiscovered worlds. You can too, by participating in the Planet Hunters TESS project online.

You will be asked to flick through observations from NASA’s Transiting Exoplanet Survey Satellite (TESS) and look out for signs of worlds beyond our solar system. Each time one of these exoplanets passes in front of its parent star – a process known as transiting – it blocks out a small amount of the star’s light.

The dimming that occurs during a planet’s transit can be detected by the satellite, appearing as a dip …

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