The most detailed dark-matter map of our universe is weirdly smooth

Trying to describe dark matter is like trying to describe a ghost that lives in your house. You can’t see it at all, but what you can see is all the stuff it’s moving around. And the only explanation is an invisible force you can’t observe or measure or interact with directly.   We know dark…


This entry originally appeared at www.technologyreview.com/2021/05/28/1025574/dark-matter-map-smooth-dark-energy-survey, and may be a summary or abridged version.