“What's that large, faint ring in the middle of the image above? It's the remnants of a supernova explosion that took place less than 9,000 years ago, and would have been visible to Indigenous people across Australia at the time…
“What's that large, faint ring in the middle of the image above? It's the remnants of a supernova explosion that took place less than 9,000 years ago, and would have been visible to Indigenous people across Australia at the time…