Did You Know?

There are more stars in the sky than grains of sand on all the beaches!

Types of Galaxies

Some galaxies are spiral, like a swirl. Others are round or flat.

Stars in a Galaxy

Stars are born in clouds of gas and dust. They live for a long time.

What galaxy Does

A galaxy holds many stars close.

Stars can make light and heat.

Galaxies can grow and change.

Some galaxies crash into each other.

They help us learn about space.

Galaxies are fun to look at!

More About galaxy

Galaxies have been around for a long time. They formed when the universe was young. Stars were born in clouds of gas. Over time, they made big groups called galaxies.

Galaxies are far away, but we can see them at night. They make the sky look pretty. We can learn about them with big telescopes.

There are many galaxies we have not seen yet. Some are very far away. Each galaxy is unique and special in its own way.

How Topics Connect

graph TD A["Galaxy System"] --> B["Stars"] A --> C["Stellar Remnants"] A --> D["Interstellar Gas"] A --> E["Dust"] A --> F["Dark Matter"] A --> G["Supermassive Black Holes"] B --> H["Milky Way Galaxy"]

What Do These Words Mean?

galaxy:A large group of stars and other space stuff held together by gravity.
stellar remnants:The leftover parts of stars after they have died.
interstellar gas:Gas that exists in the space between stars.
dark matter:A type of matter that we can't see but makes up most of the mass in galaxies.
supermassive black holes:Very large black holes found at the center of galaxies.