4th-10th March

Orbit: Earth's Extraordinary Journey 
BBC2 London 9:00pm-10:00pm (1 hour ) Sun 4 Mar
Season 1 Episode 1 of 3
New series. Kate Humble and Dr Helen Czerski examine the Earth's annual trip around the sun to show the effect it has on the planet, including its influence on the weather and the tides. The first episode covers the period from July to the winter solstice in December, with Helen leaping from an aeroplane and Kate briefly becoming the fastest driver in the world to demonstrate the consequences of the orbit on Earth's inhabitants

 Storyville: Knuckle - Bare Fist Fighting (2011) 
BBC4 10:00pm-11:30pm (1 hour 30 minutes) Mon 5 Mar
Premiere. Documentary examining the secretive world of bare-knuckle boxing among Ireland's travellers over the course of 12 years. The film focuses on a long-running feud between two rival families, and a series of brutal bouts that takes place between members of the two clans

Dirk Gently 
BBC4 9:00pm-10:00pm (1 hour ) Mon 5 Mar
Season 1 Episode 1 of 3
New series. Comedy drama based on Douglas Adams' novels about a self-styled holistic detective who specialises in discovering improbable solutions to baffling mysteries.

Horizon: Solar Storms - The Threat to Planet Earth 
BBC2 London 9:00pm-10:00pm (1 hour ) Tue 6 Mar
Scientists predict this year will see a fit of violent activity on the sun which will propel billions of tonnes of superheated gas and pulses of energy towards Earth. In 1989 one of these solar storms, which has the power to close down modern technology, cut off the power to the Canadian city of Quebec. Horizon meets the weathermen as they try to predict what's coming and organisations like the National Grid as they prepare for the cosmic tempest