Venture into another dimension and discover all about astronomy and the study of celestial objects, such as stars, comets, planets and asteroids. Plus, how you can be captivated by the wonders of the universe at the Peter Harrison Planetarium at Royal Observatory Greenwich. 

The telescope has evolved as a key scientific instrument that has changed our perceptions of the world. 

Polaris is the brightest star in the Ursa Minor constellation, and has been used by sailors for navigating at sea.

Useful tips from the space experts at the Royal Observatory Greenwich on how to become an astronomer

Since its 1990 launch, Hubble Space Telescope has been dazzling the world with images of space and a deeper understanding of how the universe works.

John Dee (1527–1608/9) was a brilliant mathematician, antiquary and astrologer, during the reign of Queen Elizabeth I.

What are the main differences between Hubble and the new James Webb Space Telescope?

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.

How the humble prism helped unlock the secrets of what the Universe is made of and where it is heading.

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

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