What is dark matter?
Galaxy rotation, lensing and cosmic structures point to additional mass. Follow those lines of evidence and distinguish them from the search for unknown particles.
Tag archive
#dark matter
Articles: 3
What is the cosmic web?
How galaxies, gas and dark matter form nodes, filaments and voids, what sky surveys measure, and how a map differs from a simulation.
What is a galaxy?
Why a galaxy is more than a patch of light: stars, gas, dust, shared gravity and evidence for dark matter. How to distinguish observation from inference.