Lisa Harvey-Smith is an award-winning astronomer and professor at the University of New South Wales. In 2018, she was appointed the Australian government's ambassador for women in science, technology, engineering, and mathematics (STEM). She is the author of When Galaxies Collide and the best-selling children's book Under the Stars. Harvey-Smith has appeared in several TV series and documentaries as a guest scientist and is a host alongside Professor Brian Cox on ABC TV's Stargazing Live.