Structure of the Universe Vocabulary

What includes ALL matter and space that exists?

• Universe

• Galaxy

• Solar System

• Planet

What is a cluster of stars, dust, gas and matter?

• Galaxy

• Comet

• Asteroid

• Nebula

What consists of planets that are gravitationally bound in orbit around a star (or stars)?

• Planetary System

• Galaxy

• Asteroid Belt

• Comet Cluster

What is an astronomical distance unit equal to the distance light travels in one year?

• Light Year

• Parsec

• Astronomical Unit

• Kilometer

What galaxy appears smooth and bright, is very old and often appears red?

• Elliptical Galaxy

• Spiral Galaxy

• Irregular Galaxy

• Lenticular Galaxy

What galaxy often has a supermassive black hole at its center?

• Spiral Galaxy

• Irregular Galaxy

• Dwarf Galaxy

• Elliptical Dwarf Galaxy

What galaxy does not have a distinct or regular shape?

• Irregular Galaxy

• Spiral Galaxy

• Elliptical Galaxy

• Lenticular Galaxy

What galaxy is where the Earth and our Solar System is found?

• Milky Way Galaxy

• Andromeda Galaxy

• Triangulum Galaxy

• Whirlpool Galaxy

What do you call any natural object that is found in space?

• Celestial Object

• Molecule

• Atom

• Organism

What do you call a bright, shining sphere of plasma that produces its own light?

• Star

• Planet

• Comet

• Asteroid