The article explores the enigmatic nature of dark matter, which is theorized to explain the universe's gravitational phenomena but eludes direct detection. Researchers at Fermilab utilized data from the James Webb Space Telescope to refine potential candidates for dark matter, particularly examining scenarios involving axions. While dark matter's presence is accepted, specific models, especially those regarding lighter particles, are being ruled out based on observational data, pushing scientists closer to understanding its fundamental properties and implications for cosmology.
Dark matter is definitely out there, but certain scenarios involving axions and axion-like particles are now disfavored. Here's how they did it.
From the internal motions of galaxies to the relative motions of galaxies within a cluster...some novel type of mass that neither absorbs nor emits light - dark matter - must be present.
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