What is a huge ball of very hot gases in space?

• galaxy
• equator
• star
• constellation

The star at the center of our solar system

• equator
• sun
• planet
• constellation 

To spin on an axis

• orbit
• revolve
• rotate
• axis

A star and all the planets and other objects that revolve around it

• galaxy
• universe
• constellation
• solar system

An imaginary line that passes through Earth's center and its North and South poles

• axis
• equator

A pattern of stars, named after mythological or religious figure, an object, or an animal

• galaxy
• star
• constellation 
• planet

To travel in a closed path

• rotate
• revolve
• orbit
• moon

Any natural body that revolves around a planet

• Sun
• eclipse
• Moon
• crater

A body that revolves around a star

• planet
• moon phase
• moon
• sun

The path one body takes in space as it revolves around another

• universe
• orbit
• refraction
• moon