Stars are the most common objects in the night sky. They are the true giants of space.
Stars are gigantic balls of burning gas, which is held together by its own gravity.
Stars are made in swirling clouds called Nebulae, which is made up of gas and dust, and these bind together to form spinning, gigantic balls. These young stars quickly heat up and shine, making each nebula glow in beautiful colors.
Inside galaxies, there are two type of Star clusters. Firstly you have, Open Clusters, they are made up of bright young stars which have just formed and are relatively close together in space. Then there is Global Clusters, they are much larger than Open Clusters and tend to be found above and below the central bulge of a Galaxy.
There are about 150 known Global Clusters in our Galaxy, each containing up to a million stars.
The nearest Star to Earth is the Sun.
Stars eventually die as they get older, but only after many billions of years.
Stars die when they eventually run out of fuel. When small and middle aged stars such as our Sun, has burned all of its hydrogen fuel, it expands to become a red giant, before shredding their outer layers of gas and is pushed away into space.
The biggest stars are called supergiants and these live for the shortest time. When these supergiants run out of fuel, they break up in the middle and with a enormous, dazzling-bright explosion, it sends their outside layers into space. This is called a Supernova.
Astronomers and scientists have spent years solving the mystery of how stars live and die in space.
The leftovers after a supergiant star ends its life in a supernova, tends to form into something from its bits and pieces. This is called a neutron star. But sometimes gravity pulls so hard on the leftovers, that they all squash together and shrink into a single point in space . This is known as a black hole.
A supernova can be seen from Earth, although the last one seen by the naked eye was in 1604.
Everything you see, its atoms were made in stars. The stars that exploded in a supernova, over 4.5 billion years ago, sent its atoms into space and they ended up here.
The Sun is one of at least 100 billion stars in our galaxy, the Milky Way. And there are billions of galaxies in the Universe.
Most stars are bigger than Earth. But the stars are very far away from our Solar System, so they appear to be very tiny to us.
A red star has the coolest temperature, although they are still about 5,000 degrees Fahrenheit, while the hottest stars are blue, and these can be as hot as 200,000,000 degrees Fahrenheit at their core.
There is ten different types of stars. They are called neutron stars, black dwarfs, white dwarfs, brown dwarfs, red dwarfs, yellow dwarfs, blue giants, red giants, blue supergiants and red supergiants.
People have used the North Star for centuries to guide them. While other stars move, the North Star stays fixed in the sky.
Stars do not twinkle. They only appear to twinkle due to turbulence in the Earth’s atmosphere.
The most common type of star is a red dwarf.
The average age of a star is between 1 and 10 billion years old.
It takes millions of years for a stars light to reach our eyes, meaning you are seeing stars from a long time ago. Looking at the night sky is like looking back in time 100,000 years.