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. 

Everything you need to know to start you on the road to becoming an amateur or professional astronomer.

What can you see through binoculars or a small telescope of the Solar System?

It is a star, is it a planet or is it a plane? A handy guide to identifying that bright object you saw last night.

The 88 constellations act as a handy map of the skies and a seasonal calendar used from ancient times. But what connects the stars in the same constellation?

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

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

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.