Researchers repurposed an experiment originally intended to detect gravity, which involved a floating magnet in a ...

Edited by Joshua Combes, University of Colorado, Boulder, CO; received September 9, 2023; accepted February 10, 2024, by Editorial Board Member Bernard F. Schutz ...

It shapes galaxies and bends light, but is dark matter even real? Find out what scientists know, what they’re still guessing, and why this mystery matters.

Dark matter is more than five times as abundant as all the visible matter in the universe. So why can't we see any of it?