Subscribe

Video companion · Hidden Physics

Physics Just Split in Half With 15 Million Galaxies

The universe is not fully explained by what glows; motion, background radiation, gravity, and invisible matter carry much of the evidence.

What you’ll discover

  • How astronomers infer unseen matter from motion and lensing
  • Why early galaxies test models without automatically breaking physics
  • How multiple observatories reveal different parts of one system

Further reading