Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleHighlights from the 2018 Observer's Challenges.AuthorsWilson, AndySubjectsPLANETARY rotation; GEOLOGICAL Survey (U.S.); ASTRONOMICAL observations; PICTURES of planets; INTERNATIONAL Space StationPublicationJournal of the British Astronomical Association, 2019, Vol 129, Issue 1, p48ISSN0007-0297Publication typeArticle