The spin of the Milky Way's galactic bar, which is made up of billions of clustered stars, has slowed by about a quarter since its formation, according to a new study by researchers at University College London (UCL) and the University of Oxford.
For 30 years, astrophysicists have predicted such a slowdown, but this is the first time it has been measured.
The researchers say it gives a new type of insight into the nature of dark matter, which acts like a counterweight slowing the spin.
Source
For 30 years, astrophysicists have predicted such a slowdown, but this is the first time it has been measured.
The researchers say it gives a new type of insight into the nature of dark matter, which acts like a counterweight slowing the spin.
Source