A team of researchers studying dark matter noticed a strange trend in the brightness of the satellite galaxies around the Milky Way.
“This kink feature that separates the old, faint population from the newer, brighter ones isn’t just what the theoretical model predicts,” study author Sownak Bose, from the Harvard-Smithsonian Center for Astrophysics, told Gizmodo.
“It can be inferred from the data.”
Atoms started forming from protons and electrons a few hundred thousand years after the Big Bang.
The most widely accepted model says that galaxies are actually visible gas and dust coalescing inside larger haloes of a yet-to-be explained kind of mass called dark matter.
Galaxies began forming with the first stars, but during the re-ionization period, astronomers think that temperatures rose too high, halting further galactic growth.