The Evidence is Building that Dark Matter is Made of Axions - by spacewriter
A computer simulation of a section of the Universe with and without axions shows how the dark matter cosmic web structure is less clumpy if containing axions. For scale, the Milky Way Galaxy would sit inside one of the small green dots that are called halos. Image: Credit: Alexander Spencer London/Alex Laguë.
Cosmic Microwave Background. Scientists compared this to modern galaxy distributions to track dark matter. Copyright: ESA/Planck Collaboration While it’s not iron-clad proof that axions are dark matter, the implications for axions are strong. Proving that they are the “stuff” of dark matter will take more observations. “We have the tools now that could enable us to finally understand something experimentally about the century-old mystery of dark matter, even in the next decade or so—and that could give us hints to answers about even bigger theoretical questions,” said Rogers.
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