Part 4/8:
Insights from JWST and Hubble Data
To evaluate the atmospheres of TRAPPIST-1's planets, the JWST has been utilized, alongside previous observations from the Hubble Space Telescope (HST). The HST confirmed the presence of the inner planets (TRAPPIST-1b and c) but found little to no evidence of atmospheres. Observations indicated only weak signals that could hint at atmospheric components.
With JWST, utilizing the secondary eclipse method has provided a more nuanced understanding of these exoplanets. This technique allows researchers to differentiate between light from the planet and its star by measuring brightness during the eclipses. Data has affirmed initial HST findings, showing a lack of significant atmospheres around TRAPPIST-1b and minimal atmosphere around TRAPPIST-1c.