Daily briefing: Watch a hammerhead shark grow its hammer

Nature, Published online: 03 October 2023; doi:10.1038/d41586-023-03126-yFirst study of hammerhead shark embryos shows how their heads develop their iconic shape. Plus, attoseconds physics wins Nobel Prize and a huge new satellite outshines nearly every star in the sky. #press

https://www.nature.com/articles/d41586-023-03126-y?utm_source=press.coop