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    Unusual CO₂-rich disk detected around young star challenges planet formation models

    September 1, 2025, Categories  Astronomy/Space

    Unusual carbon dioxide-rich disk detected around young star challenges planet formation models
    An image of the star-forming region NGC 6357 with the young star XUE 10. Observations with JWST/MIRI reveal a planet-forming disk whose spectrum shows clear detections of four distinct forms of carbon dioxide (CO2), but only little water, providing new insights into the chemical environment where planets are taking shape. Credit: Stockholm University (SU) and María Claudia Ramírez-Tannus, Max Planck Institute for Astronomy (MPIA).

    A study led by Jenny Frediani at Stockholm University has revealed a planet-forming disk with a strikingly unusual chemical composition: an unexpectedly high abundance of carbon dioxide (CO2) in regions where Earth-like planets may one day form.

    The discovery, made using the James Webb Space Telescope (JWST), challenges long-standing assumptions about th...

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    Cosmic ‘Winter’ Wonderland

    December 25, 2016, Categories  Astronomy/Space

    NGC 6357

    Image credit: X-ray: NASA/CXC/PSU/L. Townsley et al; Optical: UKIRT; Infrared: NASA/JPL-Caltech

    Although there are no seasons in space, this cosmic vista invokes thoughts of a frosty winter landscape. It is, in fact, a region called NGC 6357 where radiation from hot, young stars is energizing the cooler gas in the cloud that surrounds them.This composite image contains X-ray data from NASA’s Chandra X-ray Observatory and the ROSAT telescope (purple), infrared data from NASA’s Spitzer Space Telescope (orange), and optical data from SuperCosmos Sky Survey (blue) made by the UK Infrared Telescope.

    Located in our galaxy about 5,500 light years from Earth, NGC 6357 is actually a “cluster of clusters,” containing at least 3 clusters of young stars, including many hot, massive, luminous stars...

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