Stars

​A star is a self-luminous celestial body consisting of a mass of gas that is held together by it's own gravity. (Hailey-3B Team Uranus).

The white dwarf is the smallest star. (Sophia 3B-Communication Team)

To transform into a red giant a star bursts with energy and the diameter of it's outer gas layers expands a hundredfold. It's surface cools and appears reddish in the process. It gets so hot in the center of a high-mass giant star that heavy chemical elements,such as iron can form through nuclear fusion.(Sophia -3B Communication Team )

The Sun is a huge, glowing ball at the center of our solar system. The sun provides light, heat, and other energy to Earth. The sun is made up entirely of gas. Most of it is a type of gas that is sensitive to magnetism. This sensitivity makes this type of gas so special that scientists sometimes give it a special name: plasma. Nine planets and their moons, tens of thousands of asteroids, and trillions of comets revolve around the sun. The sun and all these objects are in the solar system. Earth travels around the sun at an average distance of about 92,960,000 miles (149,600,000 kilometers) from it. (Hailey-3BTeam Uranus)

Stars are mostly hydrogen(about 90 percent) and helium(roughly 10 percent), with tiny amounts of other gases.The smallest true stars have about 10 percent of the Sun's mass.Many common stars,are really orbiting each other.In its core,a true star must be hot enough-at least 11 million degress Fahrenheit(6 million degressCelsius) to-have enough nuclear reactions.Stars are a big ball of glowing gas.Smaller than these are the brown dwarfs,star-like bodies that never bacame hot enough to fuse hydrogen into helium.They give a little haet but they cannot shine like a true star.The most massive stars known seem to have about 150 times the Sun's mass.Astronomers think that if a star bigger than this tried to form,the cloud that gave birth to it would probably break apart and produce two or more stars.(Ava-3B Team Saturn)

there are more then 100 stars in the sky.

stars are orn in clouds that are giant.

with gas and dust called nebulas.

stars change as they get older. (MAURA TEam stars) stars move very rapidly ten or more miles per second. the andromeda galaxy lies in a far distant space almost twelve quintillion miles away. thats 12,000,000,000,000,000,000 light from this galaxy has been traveling for more then two million years. by the time we see it in our telescopes.