What are stars made of? How are they born, how do they live, and how do they die?
- Our nearest star is the Sun.
- A star is formed from a cloud of dust and gas, which shrinks under gravity and increases in temperature.
- There are three main types of star: main sequence, giants and white dwarves.
- When a star dies and explodes as a supernova, its elements are blown out into the Universe to form new stars and planets.