Structure of the Universe

What is the name for a large collection of stars, gas, and dust held together by gravity?

• Solar system

• Galaxy

• Universe

• Nebula

What consists of a star and all the bodies in orbit around it?

• Solar system

• Galaxy

• Nebula

• Comet

What is a large celestial body that is composed of gas and emits light?

• Planet

• Nebula

• Moon

• Star

What is the word used to describe space and all of the energy and matter in it?

• Solar system

• Galaxy

• Universe

• Outer space

Which one of the following is NOT part of our solar system?

• Pluto

• Moons

• Asteroids

• Dwarf stars

How many planets are in our solar system?

• 7

• 8

• 9

• 60

What type of galaxy is the Milky Way?

• Elliptical

• Spiral

• Dwarf

• Irregular

What is a light-year?

• The distance to our closest star

• How fast light travels

• Buzz's last name

• The distance light travels through space in one year

What is the name for large empty areas in the universe?

• Voids

• Clusters

• Webs

• Cosmic spaces

What are the names of the first four planets from the Sun?

• Venus, Earth, Mars and Jupiter

• Earth, Moon, Mars and Mercury

• Mercury, Venus, Earth, and Mars

• Pluto, Neptune, Uranus and Saturn