New Study Challenges Popular Theory About Dwarf Galaxies


A new international study involving ANU has found a plane of dwarf galaxies orbiting around Centaurus A in a discovery that challenges a popular theory about how dwarf galaxies are spread around the Universe. 

Co-researcher Associate Professor Helmut Jerjen from ANU said astronomers had previously observed planes of dwarf galaxies whirling around our galaxy, the Milky Way, and the neighbouring Andromeda.

He said the latest finding challenged a long-held theory among cosmologists and theoreticians that there were thousands of dwarf galaxies in all directions around these large galaxies like bees swarming around a hive. 

"Cold dark matter theory made astronomers believe that the best studied galaxies in the Universe - the Milky Way and Andromeda - are the odd ones out," said Dr Jerjen from the ANU Research School of Astronomy and Astrophysics.

Read more at Australian National University

Image: This is an image of Centaurus A. (Credit: ANU SkyMapper)