A study of has been done which tells us that astronomers at the Durham University have found evidence that some of the earliest galaxies to form after the Big Bang are orbiting our own Milky Way.
Two clusters of galaxies have been identified and both are thought to be more than 13 billion years ago, including Segue-1, Bootes I, Tucana II and Ursa Major I.
Professor Carlos Frenk, Director of Durham University’s Institute for Computational Cosmology, said: “Finding some of the very first galaxies that formed in our Universe orbiting in the Milky Way’s own backyard is the astronomical equivalent of finding the remains of the first humans that inhabited the Earth. It is hugely exciting.
“Our finding supports the current model for the evolution of our Universe, the ‘Lambda-cold-dark-matter model’ in which the elementary particles that make up the dark matter drive cosmic evolution.”