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    multi-planet system HR 8799 tagged posts

    JWST captures its first direct images of carbon dioxide outside solar system

    March 18, 2025, Categories  Astronomy/Space

    HR 8799
    The clearest look yet in the infrared at the iconic multi-planet system HR 8799. Colors are applied to filters from Webb’s NIRCam (Near-Infrared Camera). A star symbol marks the location of the host star HR 8799, whose light has been blocked by the coronagraph. In this image, the color blue is assigned to 4.1 micron light, green to 4.3 micron light, and red to the 4.6 micron light.
    Image credit: NASA, ESA, CSA, STScI, W. Balmer (JHU), L. Pueyo (STScI), M. Perrin (STScI)

    The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR8799, a multiplanet system 130 light-years away that has long been a key target for planet formation studies.

    The observations provide strong evidence that the system’s four giant planets ...

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