4. Little Green Men

How to explore space, without leaving earth.

Astrophysicist Emma Chapman takes us on an electrifying voyage through the cosmos using one of the most powerful, yet overlooked, tools in science: the radio wave. Chapman reveals how these invisible messengers glide through space, bounce off planets, tunnel through clouds and slip past galactic dust - carrying secrets of the universe that no other kind of light can uncover.

Episode Four: Little Green Men

In 1967 Phd Student Jocelyn Bell Burnell detected a mysterious repeating signal. Could it be 'Little Green Men'?

Read by Jasmine Hyde.
Produced and abridged by Karen Rose
A Sweet Talk Production for BBC Radio 4.