How to Find the Universe’s Most Mysterious Matter
via SyFy
We have some good ideas, so scientists have been looking to see if any of these ideas pan out. In a recent paper, astronomers report looking for one particular flavor of dark matter — low-mass axions — and they didn’t see it. That’s unfortunate, since these weird subatomic particles are a pretty good guess for what makes up dark matter. However, it doesn’t rule out axions entirely as dark matter, and in fact could spur on further tests.
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