Key Stage 3
Clusters of binary stars appear to dance around each other while our sun is unusually alone.
How do the fusion reactions at the hearts of all stars determine their brightness, density and life expectancy? Are all stellar deaths the same? And what is destined for the star at the centre of our solar system?
Watch exploding stars, planetary nebulae, supernovas and black holes. Could the Big Bang happen in reverse? Or will the universe continue expanding forever?