Grade 5 Unit 2 Vocabulary Solar System and Universe

A celestial body moving around the sun, oval shaped orbit, made of dust,ice,gas forms a tail.

A rotating body, such as the Earth, spins on this ......

A self luminous object that shines through the release of energy produced by nuclear reactions.

The natural satellite of the Earth, visible mainly at night, by reflected light from the sun.  

The study of objects in space and their characteristics.  

An optical instrument for making distant objects appear larger and therefore nearer.

A relatively large object moving around a star.

The shape illuminated (sunlit) portion of the moon as seen by an observer here on Earth.

To move in a circular orbit around, such as the Earth revolving around the Sun.

A grouping of stars which have been given names by ancient astronomers due to their shape.

Our Home Galaxy

All of the known or supposed objects throughout space is the universe.

The force of attraction between particles of bodies occur because of their mass is gravity.  

A group of stars, gas and dust held together by gravity.

A half of the earth, divided into north & south by the equator, or east to west by the axis.

The system of our planets and other objects orbiting the star, which happens to be our Sun.

The movement or path of the Earth or a heavenly body turning on its axis.  

The orbiting of one heavenly body around another.

The star that is the central body of our solar system, around which the planets revolve.

Relatively small celestial bodies that move around the sun mainly between Mars and Jupiter.