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. 

F3106-2.jpg

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?

L1160.jpg

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.

MeridianLine_SummerCampaign_612.jpg

Why was Greenwich chosen as the home of the Prime Meridian and Greenwich Mean Time, and what do those terms mean?

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

F5602-001.jpg

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

Hunting Moon © Jean Baptise Feldmann, Astronomy Photographer of the Year People and Space Runner Up 2011

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.

F9885.jpg

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. 

Pages