The Andromeda Galaxy Copyrighted imageCredit: By Davidherraezcalzada via Dreamstime under subscription

In the third episode of the series that puts science and technology to the test, the team face more fun experiments and challenges. And why not join in with our debate on the size of the universe: read Dr Andrew Norton's article below, which may help you get your head round just how big, big can be!

Tonight Liz conducts an experiment into jet lag and how to avoid it.

Dallas demonstrates the size of the solar system with the help of a bicycle and a fruit bowl.

And Jem upgrades his square-wheeled skateboard.

First broadcast on 22 September 2010

Explore the world of Bang

The Bang screensaver has retired Featuring: Activity Copyrighted imageCredit: The Open University

 Save your precious screen - and pick up some science at the same time!  Launch now: The Bang screensaver has retired

Take the Bang challenges Copyrighted imageCredit: Janet Sumner

Can you use your scientific knowledge and know-how to get the Bang! team out a series of sticky situations?  Read more : Take the Bang challenges

Scratch and smell: Take the test Copyrighted imageCredit: The Open University

The scratch and sniff test ran in conjunction with Bang Goes The Theory in 2010.  Read more : Scratch and smell: Take the test

More Bang on bbc.co.uk Copyrighted imageCredit: BBC screen shot

Find out more about the team and the challenges they face - and watch online.  Read more : More Bang on bbc.co.uk

Bang Goes The Theory 2 - Stay in touch Creative commons imageCredit: cerfman17 under CC-BY-NC-SA licence

Keep in touch with The Open University, and find out about our courses and programmes.  Read more : Bang Goes The Theory 2 - Stay in touch

Inside the science

Solar size

Galaxies apart: Join the debate Copyrighted imageCredit: By Davidherraezcalzada via Dreamstime under subscription

The distances in space, even to one of our nearest galactic neighbours, are phenomenal. Dr Andrew Norton helps us imagine just how far "far" is,...  Read more : Galaxies apart: Join the debate

The size of the universe Copyrighted imageCredit: Production team

Professor Russell Stannard investigates what is beyond the observable universe and explores claims that the universe might close back on itself.  Read more : The size of the universe

Measuring the Solar System Copyrighted imageCredit: Production team

Dr Alan Cooper discusses the methods used to measure the solar system  Read more : Measuring the Solar System

Universe timeline Featuring: Activity Copyrighted imageCredit: NASA

From the Big Bang to the possible end, explore the story of our universe  Launch now: Universe timeline

From the OU on iTunesU - The relativistic universe Copyrighted imageCredit: OU

Dr Robert Lambourne and Dr Stephen Serjeant of The Open University's Department of Physics and Astronomy introduce the origin of relativistic cosmology and share the...  Read more : From the OU on iTunesU - The relativistic universe

The restless universe Copyrighted imageCredit: The Open University

From Kepler to modern day scientists, follow the development of thought about the restless universe.  Read more : The restless universe

Jeg lag

The science of sleep Copyrighted imageCredit: Production team

Mike Leahy and Peter Naish discuss why we need sleep and what happens if we are deprived, as part of the BBC/OU programme website for...  Read more : The science of sleep

Sleep: A doctor's advice Copyrighted imageCredit: Production team

Dr Natheera Indrasenan discusses the benefits of a good night's sleep and how to achieve them.  Read more : Sleep: A doctor's advice

Sensory receptors

Take the photographic memory test Featuring: Activity Copyrighted imageCredit: Jupiter Images

Can you capture scenes just by looking at them? Find out with our photographic memory test.  Launch now: Take the photographic memory test

Measure the Pulfrich Effect Copyrighted imageCredit: photos.com

Using the Pulfrich Effect, it's possible to calculate the difference in speed in how quickly your eyes communicate with your brain. Why not have a...  Read more : Measure the Pulfrich Effect

From the OU on iTunesU - Sensory augmentation devices Copyrighted imageCredit: OU

How can new technology help you to play a new musical instrument? The E-Sense research programme is experimenting with novel augmentation devices to explore sensory,...  Read more : From the OU on iTunesU - Sensory augmentation devices

Hearing Copyrighted imageCredit: The Open University

Hearing is a familiar and important human sense that is a topic naturally of interest to those who are curious about human biology. This unit...  Read more : Hearing

Square-wheeled motorbike

Reinventing the square wheel: Join the debate Copyrighted imageCredit: By vrogy via flickr under a Creative Commons licence.

Square wheels - odd looking indeed - but what would be the practical application for everyday life? See what Dr Ian Johnston thinks, and if...  Read more : Reinventing the square wheel: Join the debate

Biker trove Copyrighted imageCredit: Used with permission

Would we make different decisions about energy use if it took an army of cyclists to power our house?  Read more : Biker trove

Geometry Copyrighted imageCredit: The Open University

Geometry is concerned with the various aspects of size, shape and space. In this LearningSpace unit, you will explore the concepts of angles, shapes,...  Read more : Geometry

From the OU on iTunesU - The physical world Copyrighted imageCredit: OU

How do helicopters beat gravity to fly? Download videos explaining all - and more about The Physical World.  Read more : From the OU on iTunesU - The physical world

Find out more

Study science with The Open University Copyrighted imageCredit: Photo: Corbis / Ozone layer over earth / Science / Open University

Take your interest in science further - explore the current science courses and qualifications available from The Open University.  Read more : Study science with The Open University

Like science? See our short courses Copyrighted imageCredit: Jmarijs | Dreamstime.com

Interested finding out more about which science course is right for you? The Science faculty offer a series of introductory short courses that can be...  Read more : Like science? See our short courses

Previously on Bang - explore series 2

Bang Goes The Theory 2 Copyrighted imageCredit: BBC

With challenges galore, Bang Goes The Theory - the show that takes an unexpected look at science - returns for a second series.  Read more : Bang Goes The Theory 2