Are formed initially from gas and dust. They are composed mainly of the hydrogen gas.
Are very hot and give off huge amounts of energy in the form of heat and light.
Our Sun is a medium sized star.
Have a life-span of about 10 billion years, after which they will cease to exist.
Are very far away from Earth. The closest Star is about 23.5 trillion miles away.
Go through many stages in their lifetime. Some of the names for these stages are Red Giant, Planetary Nebulae, White Dwarf, Neutron and even Black Holes.