Astronomers have been eager for the landmark telescope to study the TRAPPIST-1 system.
, offers astronomers multiple chances at understanding the formation and evolution of Earth-sized worlds around a single star. The star is relatively faint and cool, and the seven planets are nestled closer to it than Mercury orbits the Sun.. Many of those observations have already been taken, but none had been shown publicly until this week’s symposium, which took place at the Space Telescope Science Institute, the operations centre for JWST.
JWST studies planetary atmospheres primarily by watching how they filter starlight shining through them as they pass in front of the star. Which molecules make up a planet’s atmosphere can indicate how it evolved and whether it might have life on its surface. It will take more observations and time to analyse the data so far collected, before researchers will know if TRAPPIST-1g has an atmosphere, and if so what it is made of.
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