Does Dark Matter theory really help scientists discover more about space? Meet one of the world's biggest sceptics and hear his views on why he thinks dark matter doesn't exist. Great clip from BBC show 'Most of Our Universe is Missing'.

Can scientists identify dark matter by mining deep into the Earth's core? Watch this great clip from BBC science show 'Most Of Our Universe is Missing' to find out more.

Scientists hunt for an answer to the ongoing dark matter debate. What is the element that holds the universe in place? Fascinating BBC science documentary clip from 'Most of Our Universe is Missing'.

Should we abandon dark matter as a theory to explain the missing element in the universe? Watch this clip to hear some interesting arguments for and against in this video from BBC science show 'Most of Our Universe in Missing'.

Hilarious out takes from series 05 of Red Dwarf. Contains strong language.

Lister is finding it hard to deal with his break-up and Holly, Rimmer and Kryten really aren't helping. Short video taken from BBC smash hit sci-fi comedy, Red Dwarf.

Tom awakes suddenly in his car, only to discover a terrible portent from Hyde… Creepy action in this clip starring James Nesbit and Gina Bellman from Jekyll.

The Red Dwarf boys are caught up in an exhilarating car chase dodging bullets and braving speed bumps. But is it all as real as it seems? Clip taken from smash hit BBC science fiction comedy, Red Dwarf.

Flickering lights and the onset of sleep while travelling on a train take Tom to a shocking confrontation… James Nesbit and Gina Bellman star in Jekyll.

Tom's wife, Claire has chained up Hyde. She's angry, confused and wants answers to her questions regarding his infidelity. Contains strong language.

Dr Tom Jackman is explaining the impending arrival of Mr Hyde to his psychiatric nurse, Katherine. Tension mounts as the clock ticks inevitably towards midnight…

Kryten tries to be helpful by fixing the toaster only to discover that it's the most annoying machine in the universe. Clip taken from smash hit BBC science fiction comedy, Red Dwarf.

The past and the future catch up with the Brigadier and the five generations of The Doctor. Great chunks of the past fade away for Peter Davidson's Doctor Who whilst an unknown entity envelops William Hartnell, Patrick Troughton and Jon Pertwee. Clip taken from the classic episode of Doctor Who

The Doctors battle for dominance and intellectual high-ground whilst the Master seeks immortality. Clip taken from popular classic episode, 'Doctor Who - The Five Doctors', starring Peter Davidson,Jon Pertwee, William Hartnell and Patrick Troughton.

Mackenzie Crook stars in this comedy clip from BBC comedy drama Spine Chillers. These two goths can hardly believ their luck when they meet an unconventional like-minded landlord whilst looking for a flat. But what is the catch?

When a man rescues the daughter of a very influential New Yorker, he is granted three wishes in thanks. But what will he choose for his first wish? Comedy drama from BBC's Spine Chillers.

A new visitor arrives on board Red Dwarf who meets everybody's needs. Hilarious clip from cult comedy classic Red Dwarf.

The boys are caught in the act when they try to sneak off without Rimmer. Hilarious clip from science fiction comedy Red Dwarf.

A rare chance to see space agency footage as a comet strikes Jupiter and is caught on camera. In one of the biggest explosions that have ever been witnessed, scientists discuss the theoretical impact of a relative blast on Earth. Clip taken from fascinating BBC documentary ' A Comet's Tale &

Watch this great clip from BBC documentary ' A Comet's Tale' for a How To guide to making your own comet nucleus. Watch as this scientist pulls on his rubber gloves for a full step by step guide to preparing and forming your own piece of celestial rock!