Stars & Galaxies

Why do few people see a night sky full of stars?

• The sun is too bright.

• Lights from towns and cities make them hard to see.

______ spreads light into different wavelengths

• star

• spectroscope

the distance light travels in one year is called a ______.

• light year

• super nova

a large ball of gas held together by gravity

• Earth

• star

A cloud of gas and dust collects to form a _________.

• nebula

• rock

The surface of the sun is called a ______.

• photosphere

• atmosphere

A big explosion that destroys a star is called what?

• supernova

• convection zone

An object in space whose gravity is so strong not even light can escape.

• star

• black hole

What kind of galaxy is this?

• elliptical galaxy

• spiral galaxy

• irregular galaxy

What type of galaxy is this?

• elliptical galaxy

• spiral galaxy

• irregular galaxy