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Screenshot of a figure from Dr. Christiansen's slides. It is titled "NASA Exoplanet Archive". The x-axis reads "orbit semimajor axis [au]", and the y-axis reads "planet mass or mass*sin(i) [earth masses]." Each of the four main methods are highlighted, as explained in the article text. The figure also indicates what types of stars each method covers: FGKM field stars for transits, nearby/inactive FGKM stars for radial velocity, distant/low-mass stars for microlensing, and nearby young stars for direct imaging.


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