An artist’s conception of the Transiting Exoplanet Survey Satellite, or TESS, an Earth-orbiting satellite that will help scientists search for planets outside our solar system | NASA/GSFC

Here Are the Necessary Ingredients for a Life-Supporting Exoplanet

NASA’s Transiting Exoplanet Survey Satellite, TESS for short, will add a powerful new tool to the hunt for Earth-like planets. Here’s how scientists are going about identifying habitable exoplanets.

Periodic table of exoplanets, last updated Nov. 2017