Exploring the Brightest Gamma-Ray Burst

It’s our Halloween special from a rain-soaked Jodrell Bank in Cheshire.

We find out what you can see in a dark, dark Halloween night sky with space-watcher and Professor of astrophysics Tim O’Brien.

Also this week, we meet some blood-sucking leeches, the horrors of pumpkin waste and could zombies ever be real?

Presenter: Victoria Gill Producers: Ella Hubber, Sophie Ormiston & Gerry Holt Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth 

To discover more fascinating science content, head to bbc.co.uk search for BBC Inside Science and follow the links to The Open University.