Disk Galaxies Rotate Once Every Billion Years No Matter Their Size
There was a recent study published on March 9. It was published by the royal astronomical society. Astronomers announced the discovery that all disk galaxies rotate about once every billion years. It does not matter their size or mass. Gerhardt Meurer is a well-known astronomer.
He is from the International Centre for Radio Astronomy Research (ICRAR). Recently in a press release. He said But regardless of whether a galaxy is very big or very small. If you could sit on the extreme edge of its disk as it spins. It would take you about a billion years to go all the way around.
He also added Discovering such regularity in galaxies really helps us to better understand the mechanics that make them tick.
He said. “You won’t find a dense galaxy rotating quickly. While another with the same size but lower density is rotating more slowly. The Theoretical study has shown to find sparse populations of young stars and interstellar gas on the outskirts of these galaxies.
although this discovery has a significant population of much older stars mingling with the young stars and gas. Meurer commented This is an important result because knowing where a galaxy ends means. We astronomers can limit our observations and not waste time, effort, and computer processing power on studying data from beyond that point.
So because of this work, we now know that galaxies rotate once every billion years, with a sharp edge that’s populated with a mixture of interstellar gas both old and young stars. as the new radio telescopes shown it will produce massive amounts of data, the fact that researchers now have a good idea where a galaxy’s edge lies should also help them significantly reduce the power required to sort through such data.
