Galaxia

Galaxies are vast systems of dust and gas held together by gravity. They are classified based on appearance into elliptical, irregular, and spiral types. The Milky Way is a spiral galaxy and is considered central among galaxies. Black holes, with immense mass, draw in matter and release energy.

What are galaxies primarily made of?

• Water and air

• Dust and gas

• Stars and planets

• Rocks and minerals

How are galaxies classified?

• By their size

• By their color

• By their appearance

• By their age

What type of galaxy is the Milky Way?

• Spiral

• Elliptical

• Irregular

• Lenticular

What is thought to be at the center of all galaxies?

• A black hole

• A nebula

• A planet

• A star

What does the black hole at the center of galaxies do?

• Emits light

• Creates stars

• Destroys galaxies

• Sucks in matter and generates energy