A star is an exploding ball of burning gas held together by gravity. Our sun is a star! It produces great amounts of energy in the form of light and heat that provide the perfect conditions for life on Earth.
To better understand how our sun and stars work….
LET’S BREAK IT DOWN!
What is the definition of a star and how does it work?
When you look at the night sky, the dots of light you see are stars! They are millions of miles away. Billions of stars exist in the universe, but many are too far away from Earth to see, even with a telescope.
Stars are huge balls of burning gases, most of which are made of hydrogen. As the hydrogen gas in a star is squeezed due to gravity, it produces huge amounts of energy, which make it glow. The size, temperature, brightness, and color of stars vary.
The color of a star is determined by its temperature. Red stars are cooler in temperature, blue stars are hottest, and other stars like ours (which is yellow) are an in-between temperature.