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Longitude found: Nevil Maskelyne and the lunar method
Find out how the celebrated Astronomer Royal helped to solve the longitude problem
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Meridian astronomy
Meridian astronomy is the meticulous surveying of the stars so that positions and movements of stars can be known accurately.
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Projectors, pranks and perpetual motion
From the satirical to the serious, the quest for longitude provoked a wealth of responses, some more worthy of attention than others.
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Which years are leap years and can you have leap seconds?
Because the Earth takes a little over 365 days to orbit the Sun, we need to make adjustments to keep the seasons from drifting: leap years and even leap seconds
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Why 12 months in a year, seven days in a week or 60 minutes in an hour?
While days and years are (fairly) neat astronomical events, what explains months, weeks, hours and minutes?
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What is Greenwich Mean Time (GMT) - and why does it matter?
How did local clock time in Greenwich change the world?
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Knotted histories: addressing Britain's colonial legacy through crochet
Meet Sarah Hawke, the artist behind a new crochet kanga on display at the National Maritime Museum
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The history of the Solebay tapestry
Discover the story behind the largest tapestry in Royal Museums Greenwich’s collection
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Christopher Wren
Best known for designing St. Paul's Cathedral, Christopher Wren's two loves of astronomy and architecture were combined when he worked on the Royal Observatory Greenwich
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Crafting identity: the making of Queering Piracy
Queering Piracy is a contemporary artwork that explores how some LGBTQ+ communities have adopted and embraced pirate history and symbolism