Ghostly circles of radio emission, hanging out in space like cosmic smoke-rings, can't be explained by current theories. And astronomers are excited to figure them out.
Ray Norris is a British/Australian astronomer at Western Sydney University, and with CSIRO Astronomy & Space Science. He researches how galaxies formed and evolved after the Big Bang, and the process of astronomical discovery with large data volumes. He also researches the astronomy of Australian Aboriginal people. Ray was educated at Cambridge University, U.K., and moved to Australia in 1983 to join CSIRO, where he became head of Astrophysics in 1994, then Australia Telescope deputy director, and director of the Australian Astronomy MNRF, before returning in 2005 to active research.