👑 350 years ago today on 22 June 1675, a royal warrant from Charles II ordered the building of the Royal Observatory in Greenwich. 👑 He had been persuaded by leading scientists that building an observatory would bring Britain closer to working out how to determine longitude at sea - a breakthrough that would boost the country's trade prospects by making global navigation easier, safer and more efficient. 👑 Over the next three and a half centuries, numerous scientific discoveries and advanceme

95K views · 1.3K reactions | Home to the Royal Observatory, National Maritime Museum, Cutty Sark & Queen's House gallery | Royal Museums Greenwich | Facebook

The Royal Observatory’s onion dome is home to the Great Equatorial Telescope. Visit Greenwich and learn more about the largest telescope of its kind in the UK. | Royal Museums Greenwich

Learn how John Harrison became a world-famous clock maker who helped to solve the problem of finding longitude at sea with the H4 pocket watch. | Royal Museums Greenwich

🎥 Discover how time and trains changed the world ... ⏰ 🚂 This year marks 350 years of the Royal Observatory Greenwich and 200 years of the modern railway in Britain. We took a step back in time to learn about the railway and the Royal Observatory’s roles in spreading Greenwich Mean Time across the country, and their sometimes tumultuous relationship, which led to a railway tunnel under Blackheath. Royal Museums Greenwich #RoyalMuseumsGreenwich #GreenwichObservatory #RailwayHistory #GMT #Railwa

🕰️ British Science Week kicked off yesterday, and with this year’s theme being ‘Time’, where better to get involved than the home of Greenwich Mean Time - the Royal Observatory? We’ve got an exciting array of events happening themed around time from now until 17 March including workshops, talks, tours, craft sessions and more. 🔴 To celebrate this exciting week in STEM, we’re taking a closer look at the striking red time ball on top of the Royal Observatory’s Flamsteed House. Our Curator of Tim