Story thread · 2 reports / 2 sources

Galactic spins carry fingerprints of the primordial universe

phys.org · 4dShare

The origin of spin in spiral and elliptical galaxies has posed a long-standing puzzle for astronomers. One idea, known as tidal torque theory, proposes that galaxies' spins are an imprinted record of the early universe, imparted by gravity long before galaxies first formed and still detectable in galaxies today.

First report: Astrophysicists find best evidence yet that galaxies get some spin before birth — science.org, 6d