It's a big step forward in understanding exoplanets.
The NIRSpec, which captured the latest carbon dioxide readings, works through filtered starlight, which is based on the concept that different gases absorb various combinations of colors. The brightness differences in these can be analyzed by researchers when cross-referenced with a spectrum of wavelengths. In this way, the composition of an atmosphere can be determined.
“Detecting such a clear signal of carbon dioxide on WASP-39 b bodes well for the detection of atmospheres on smaller, terrestrial-sized planets,” Natalie Batalha of the University of California at Santa Cruz and leader of the research team said in the press release., ESA, CSA, and L.
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