Webb turned its infrared gaze on the Martian surface and atmosphere.
. It shows the sun-soaked Eastern Hemisphere of the planet, which Webb observed from its vantage point nearly 932,000 miles away at Sun-Earth Lagrange Point 2.The first image shows a view of Mars in 2.1 microns, while the second was taken in 4.3 microns—both wavelengths that correspond to the near infrared spectrum, which is not visible to the human eye.
Webb also collected some spectroscopic data on the Martian atmosphere using the Near-Infrared Spectrograph. The spectrograph reveals some of the molecules that make up Mars’ incredibly thin atmosphere, including carbon dioxide, water, and carbon monoxide, which correspond to the highlighted dips in the graph. While this isn’t a groundbreaking conclusion, it does show
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