The JamesWebbSpaceTelescope recently detected its first exoplanet, but its real promise is in studying exoplanet atmospheres.
We are entering a new period of exoplanet astronomy, with a recent announcement that the James Webb Space Telescope has detected its first exoplanet. The promise of Webb is that it will be able to not only spot exoplanets but also study their atmospheres, which would mark a major step forward in exoplanet science.
The big aim, though, is for Webb to detect exoplanet atmospheres. The researchers were able to gather some data on the newly detected planet’s atmosphere and to rule out some possibilities, but they aren’t yet able to determine the exact composition of its atmosphere. That’s because as difficult as it can be to detect an exoplanet, studying its atmosphere is even harder.
However, trying to piece together information from a transmission spectrum is complicated as the percentage of light being blocked is so low, at around 0.1% of the star’s brightness. And bear in mind, this is a star located 41 light-years away. If you look at the transmission spectrum of the recently detected planet, shown below, you can see the data points in white.
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