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The Periodic Table of Exoplanets

by Kenny Hoeschen
The Periodic Table of Exoplanetszoom in

This periodic table maps 889 known exoplanets into the six mass/size groups (ME = Earth masses) and three temperature groups. Exoplanets shown in the Hot Zone are too close to their host star to have liquid water, those in the Warm ‘Habitable’ Zone are the right distance for liquid water, and water can only exist as ice on those planets in the Cold Zone.

Note: we’re not sure if this table takes into account the research showing that cloud cover may make more of those planets potentially habitable.

The number of exoplanets in each category is shown in the center of each frame and as a percent in the lower left. The diagram also shows the number of multiple stellar systems (top right). The most abundant objects of the confirmed exoplanets are hot jovians. There are four warm superterrans that are our best candidates so far for habitable exoplanets.

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