A star is bornStars are born in the vast clouds of dust and gas that lurk in deep space – some of the coldest, darkest places there are. It’s a process that can take millions of years, but every day, somewhere, a new star lights up. Just how this happens is a chain of events studied by Professor Serena Viti.
AdulthoodThis is the prime of a star’s life, and the phase that our own Sun is in – just like 90% of all the other stars in the sky. While from Earth the Sun looks like a perfect golden orb, the scientists who know it better, like Dr Helen Mason, have uncovered it isn’t nearly as serene as it seems.
Red giantsDr Robin Catchpole has tracked the development of some of the largest, most bloated stars in the Universe: red giants. Stars so puffed up they’re almost coming apart at the seams. Their story reveals the fate of our own Sun, and of planet Earth itself.
White dwarfsWhen white dwarfs were first discovered their incredible density baffled astronomers. A whole new form of physics – quantum mechanics – had to be invented before scientists could even begin to make sense of them. Professor John Ellis describes them as retired stars, cluttering up the Universe.
SupernovaeProfessor Alex Filippenko is a Supernova Hunter. As stars live their lives over millions or billions of years we don’t see them change. The exception is if a star goes supernova – these rare explosions can brighten dramatically over the course of just one night. They’re the deaths of the most massive stars, but they also hold the key to the composition of the Universe.
Neutron starsThe first evidence for neutron stars was a strange repetitive signal from outer space – one so unexpected that the team that picked it up even considered aliens as its source. The sender turned out to be the equivalent of a cosmic lighthouse: a type of neutron star called a pulsar. Professor Douglas Leonard specialises in studying these stellar tombstones, and the most ones mysterious of all... black holes.
Black holesScientists believe black holes to be the ultimate end to a star. It is complete destruction by gravity. It is to some extent a theory, but Professor Douglas Leonard thinks he’s seen the creation of one of these mysterious objects in space. Some scientists even suspect that black holes could hold a key to understanding the creation of the Universe itself.
Big Science Season
Seven Ages of Starlight is part of the BBC Four Big Science Season. Discover the other programmes in the season below...
Order and Disorder: A two-part series presented by Professor Jim Al-Khalili which tells the story of how humanity mastered the two most important concepts of the modern age - energy and information.
The Final Frontier? A Horizon Guide to the Universe: An in-depth look at science's quest to understand the mysteries of the Universe.
Tails You Win: The Science of Chance: Professor David Spiegelhalter tries to pin down what chance is, revealing how it works in the real world.
Voyager: To the Final Frontier: A look at NASA's Voyager programme as the two spacecraft leave the Solar System.
- Rupert Graves
- Gaby Hornsby
- Gaby Hornsby
- Executive Producer
- Helen Thomas
Available on: Video download
From one supplier: iTunes