The largest planets in our solar system are called _______.
A meteor that stikes the Earth's surface is called a _________.
The closest star to the Earth is the __________.
___________ is the farthest planet from the sun.
___________ is the smallest inner planet.
Which planets are made up of mostly rock?
Mars is mostly like Earth because it has two small moons and shows evidence of water.
Moons are naturally occurring satellites that orbit planets.
When a ______ gets close to the Sun, its frozen material begins to melt and forms a trail of dust, rock and gas behind it.
Our solar system is part of a lager region of space called a __________.
The Milky Way is larger than our solar system. It contains more than 200 billion stars, including the Sun and our solar system.