Solar System

A planet needs to clear away any objects of a similar size near its orbit.

A regular, repeating path that one object in space takes around another.

A gravitationally bound system consisting of a sun and the objects that orbit it.

There are more than 200 moons in our solar system.

The force that holds the planets in their place.

A scale model shows actual sizes and distances.

The donut shaped region of icy bodies beyond the orbit of Neptune is called....

The inner planets are....

The region in which an Earth-like planet can support life, can possess liquid water and possibly support life

The only star in our solar system is.....

Scientists classify whether or not an object is a planet if it....

Our solar system is part of the ____________________galaxy.

The 4 outer planets are called gas giants.

Another name for the planets closest to the sun....

A huge collection of gas, dust and billions of stars held together by gravity.

Scientists think there could be as many as one hundred billion galaxies in the universe.