Skip to content
Science, Maths & Technology
Author:

ET, life and the universe

Updated Thursday, 25th February 2010

Is there intelligent life out there? Professor Russell Stannard examines various possibilities, and our chances of ever finding out about them.

This page was published over five years ago. Please be aware that due to the passage of time, the information provided on this page may be out of date or otherwise inaccurate, and any views or opinions expressed may no longer be relevant. Some technical elements such as audio-visual and interactive media may no longer work. For more detail, see our Archive and Deletion Policy

 

Transcript

If the laws of nature had been chosen at random, with arbitrary values for the masses of the fundamental sub-atomic particles, the strengths of the forces, the thrust of the Big Bang and so on, the chances of life being able to develop anywhere within the universe would have been virtually zero. The life-friendly nature of the universe goes under the name The Anthropic Principle.

So, why is it thus? Was it deliberately designed that way? Or are there many universes, all running on different lines, with ourselves living in a freak universe that happens, purely by chance, to have all the right set of conditions? The latter possibility is known as the multiverse. But how could we ever hope to verify the multiverse hypothesis if we can only make contact with whatever is in our own universe?

Given that there must be many locations in the cosmos where life could have developed, we ask whether there are extraterrestrial forms of intelligent life. If so, how advanced are they likely to be? And what are our chances of ever finding out about them?

 

Author

Ratings

Share

Related content (tags)

Copyright information

For further information, take a look at our frequently asked questions which may give you the support you need.

Have a question?