This RAS eBook is a basic introduction to the history of the universe from the Big Bang around 13.7 billion years ago, to the present day – and beyond.
From Aristotle's attempts to estimate the size of the Earth at least 2330 years ago, to the Hubble Space Telescope and the cosmic microwave background, it covers the key developments in human thinking that have shaped our understanding of where we came from and where we are going.
In easy-to-read chunks illustrated with photographs and diagrams, you can find out how we know the universe is expanding, how planets are built, why the sky is dark at night, and more.
How to read 'Cosmology'
The eBook has been designed as an interactive PDF and works best using Adobe Reader's full-screen mode. For the best reading experience, download the PDF to your computer first, although there are several ways you can read it:
• click the image above to read online,
• or download and read the 20-page PDF eBook here (on a Mac: ctrl-click or right-click the link and choose 'Save linked file', on a PC: right-click the link and choose 'Save target as'),
• or read the web version here.