Alcyonea, the largest radio galaxy ever observed

3 billion light-years from our tiny planet lurks a galaxy unlike any we’ve ever seen before. In fact, Alcyonée is a giant radio galaxy measuring 16.3 million light-years across, making it the largest known structure of galactic origin. In Greek mythology, Alcyoneus was one of the greatest giants, the son of Ouranos (Heaven) and Gaia … Read more