How big is the Universe?

Camera Obscura closure

The Camera Obscura will be closed from 21 May until 25 May. The rest of the Royal Observatory and Meridian Line remain open.

Essential information

Key stage: 
Key Stage 3, Key Stage 4, Post-16
Resource type: 
Video
Location: 
Royal Observatory
School subject: 
Astronomy, Science

Royal Observatory astronomer Liz shows us the expanding nature of the Universe and how this affects the light reaching us from distant galaxies, some of which will remain forever hidden from our view.

Accompanying Resources