On the far side of the Moon lies the Maunder crater, named after two British astronomers - Annie and Walter Maunder. Annie worked alongside her husband at the end of the 19th Century, recording the dark spots that pepper the Sun. The name Maunder is still known in scientific circles, yet Annie has somehow slipped from history. "I think the name Maunder is there and we have all rather forgotten that that's two people," says Dr Sue Bowler, editor of the Royal Astronomical Society magazine, Astronomy and Geophysics. "She was acknowledged on papers, she published in her own name as well as with her husband, she wrote books, she was clearly doing a lot of work but she also clearly kept to the conventions of the day, I think."