Planet Nine

For 76 years, Pluto was called the ‘ninth planet’ in our Solar System. Thought at first to be as large as Earth, it turned out to be only two-thirds the size of our Moon! In 2006, when astronomers decided in 2006 which objects would qualify as planets, little Pluto missed out. However, there is good reason to think that there may be a real ninth planet out there, lurking way out beyond Neptune. Planet Nine reveals why we think it’s there, and how astronomers are searching for it. The minimum age for attendance at this show is five years. Planetarium terms and conditions • Please arrive at Hive at least fifteen minutes before the start of the show. • All ticket holders are required to check in at Hive Visitor Services on the ground floor before making their way throughout the building. • Tickets can be purchased at Hive Visitor Services on the ground floor if seats are still available. • Shows start promptly on the hour, and unfortunately latecomers cannot be admitted once the doors have been closed. • Visitors who leave the Planetarium during the show cannot be re-admitted

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