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    spectral fingerprints tagged posts

    Hubble’s tale of 2 Exoplanets: Nature vs. Nurture

    June 6, 2017, Categories  Astronomy/Space

    This diagram compares Hubble Space Telescope observations of two "hot Jupiter"-class planets orbiting very closely to different sunlike stars. Astronomers measured how light from each parent star is filtered through each planet's atmosphere. HAT-P-38 b did have a water signature indicated by the absorption-feature peak in the spectrum. This is interpreted as indicating the upper atmosphere is free of clouds or hazes. WASP-67 b, has a flat spectrum that lacks any water-absorption feature, suggesting most of the planet's atmosphere is masked by high-altitude clouds. Credits: Artwork: NASA, ESA, and Z. Levy (STScI); Credit: Science: NASA, ESA, and G. Bruno (STScI)

    This diagram compares Hubble Space Telescope observations of two “hot Jupiter”-class planets orbiting very closely to different sunlike stars. Astronomers measured how light from each parent star is filtered through each planet’s atmosphere. HAT-P-38 b did have a water signature indicated by the absorption-feature peak in the spectrum. This is interpreted as indicating the upper atmosphere is free of clouds or hazes. WASP-67 b, has a flat spectrum that lacks any water-absorption feature, suggesting most of the planet’s atmosphere is masked by high-altitude clouds.
    Credits: Artwork: NASA, ESA, and Z. Levy (STScI); Credit: Science: NASA, ESA, and G. Bruno (STScI)

    Is it a case of nature versus nurture when it comes to 2 “cousin” exoplanets? In a unique experiment, scientists used NASA’s Hubble...

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