Astronomy

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. 

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?

Handy tables of orbits, mass, rotation periods and tilts for the planets and their moons in the Solar System.

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°?

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. 

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