Royal Observatory Greenwich

Whether it's observing the stars, standing astride the Prime Meridian or marvelling at John Harrison's timepieces, the Royal Observatory Greenwich provides a treasure trove of fascinating information. Read all about the history of space, time and navigation, plus find out more about the Insight Astronomy Photographer of the Year competition.

Anarchism-Greenwich-Park-The-Graphic.jpg

In 1894 international terrorism made its UK debut just outside the Royal Observatory. It created a gory mess and an enduring mystery.

Sir 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.

Edmond Halley by Sir Godfrey Kneller (detail).jpg

Edmond Halley set out to sea to use magnetism as a possible solution to the problem of determining longitude.

flea.jpg

Neither the smallest nor the largest objects in the known Universe escaped the brilliant Hooke’s attention.

Airy-BHC2507_detail.jpg

George Biddell Airy was Astronomer Royal for much of the 19th century and he amassed a treasure trove of data.

View of the Great Equatorial Dome, Royal Observatory Greenwich, at night_tile.jpg

The Great Equatorial Telescope at the Royal Observatory kept Britain at the forefront of astrophysics and greatly expanded our knowledge of stars.

L4413.jpg

Discover the story of the founding of our Observatory, Britain's first state-funded scientific research institution.

Airy-transit-circle_L2156-002_slider.jpg

The story of Astronomer Royal George Biddell Airy and the remarkable Airy Transit Circle telescope he designed at the Royal Observatory Greenwich.

D5568.jpg

In August 2015 a paper was published by scientists in the US explaining why the Prime Meridian at the Royal Observatory Greenwich is 102 metres to the west of the prime meridian used by satellite based navigation and timekeeping, known as the International Reference Meridian or IRM. The paper created quite a stir in the media.

Solar-system_L1075-004.jpg

19th-century astronomers went beyond cataloguing the skies to understanding their composition and predicting what could not be seen.

Pages