Syzygy Merch! Get it at the store.Help us make Syzygy even better! Tell your friends and give us a review, or show your support on Patreon: patreon.com/syzygypodSyzygy is produced by Chris Stewart and co-hosted by Dr Emily Brunsden from the Department of Physics at the University of York.On the web: syzygy.fm | Twitter: @syzygypodSince you’re here, you might be interested in a new, sciencey podcast: Science, possibly — science-adjacent stories by Chris Stewart and James Lees.Things we talk about in this episode:China’s Mars missionVoyager 1 hears a humThe NASA Voyager mission siteThe interstellar medium