The research team used the Webb Mid-Infrared Instrument (MIRI) to detect infrared radiation emitted by the planet, allowing them to calculate the amount of heat emitted as infrared light. The researchers found that TRAPPIST-1 b’s daily temperature is about 500 Kelvin, suggesting that the planet has little or no atmosphere.
The presence of the atmosphere is an important factor in determining the habitability of a planet. Previous observations with the Hubble and Spitzer space telescopes showed no signs of a layered atmosphere, but could not rule out a dense one either. With the new information provided by JWST, the researchers hope to apply the findings to other exoplanets and better understand the potential for habitability outside our solar system.
Source: Ferra
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