Outside Solar System Vocabulary

A region of space with a gravitational field so intense that nothing can escape it

The force that draws objects toward the center of the earth or any other large celestial body

A star and the celestial bodies that revolve around it; a planetary system 

A theory that suggest the universe began from a single, enormous explosion & is still expanding

The galaxy that includes the Sun and our Solar System

An oval-shaped galaxy 

A measure of the amount of radiating or reflected light coming off a star or other object

The open areas between solid bodies in the universe beyond our Solar System

A close group of similar objects

Any planet that exist outside our Solar System 

A region or cloud of interstellar dust and gas appearing as a bright or dark patch 

A large collection of planets, gas, dust, and billions of stars, bound together by gravity

Brightness 

A planetary system 

To revolve around another object 

Who is someone that is trained to travel and perform tasks in space?

A celestial body in orbit around a star

Anything that takes up space and has weight 

The stage of change that something goes through as time passes

The whole Universe

A scientist who studies the origin and structure of the universe 

A galaxy without a regular shape

A unit of distance in astronomy that light travels in one year

A unit of distance in astronomy equal to the distance that light travels in one year 

An oval-shaped galaxay

A group of stars that forms a shape and is named for that shape 

Any planet that exist outside our Solar System 

A scientist who studies planets, stars, galaxies and other objects in space is a what?

The measure of the amount of the matter on an object