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In September 2019, for the first time in over 360 years, compasses at Greenwich pointed true north. But what does this mean - and haven't compasses always pointed 'north'? 

Learn the basics of astronomy at the home of time and space in this online course

Learn the basics of astronomy with expert tutors from Royal Observatory Greenwich

The campaign to end slavery began in the late 18th century. Alongside the work of famous campaigners and formerly enslaved people living in London, one of the key events in the abolition movement was a rebellion on the island of Haiti

Discover 15 incredible astronomy facts that might just change how you see the Universe

Find out more about the history of Franklin's fatal voyage, and the continuing work to explore the Erebus and Terror shipwrecks

Galileo pioneered the use of the telescope for observing the night sky. His discoveries undermined traditional ideas about a perfect and unchanging cosmos with the Earth at its centre.

The aurora borealis, also known as the 'northern lights', is one of the most spectacular displays in the night sky. What is the science behind these colourful curtains of light?

Sir John Franklin's final voyage in 1845 in HMS Erebus and HMS Terror became the worst disaster in the history of British polar exploration

The first crewed lunar landing in 1969 was a historic triumph for the USA and humankind. Including the Apollo 11 mission, 12 men have walked on the Moon. But who were they?