Galaxy Rotation Patterns May Encode Secrets of the Early Universe

In the rotational memory of galaxies, astronomers have found an unexpected archive: the spin, tilt, and angular momentum of these vast structures carry encoded signatures from the universe's first moments, long before stars or planets existed. Rather than looking backward through ancient light alone, researchers can now read the physical properties of present-day galaxies as a fossil record of primordial density fluctuations seeded by inflation. This discovery offers cosmology a second language for interrogating its oldest questions — one written not in radiation, but in the turning of matter