Royal Observatory Greenwich

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

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

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

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

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

Meridian astronomy is the meticulous surveying of the stars so that positions and movements of stars can be known accurately.

How and, more importantly, why do we measure the brightness of stars?

The challenges of measuring everything from a fast-moving, wobbly platform through a haze.

With a telescope we can see billons of miles and travel effortlessly back billions of years in time.

Why was Greenwich chosen as where east meets west at Longitude 0°?

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