These planets are closest to the sun.
What are inner planets?
This is where most of the asteroids in space are located.
What is the asteroid belt?
None of the inner planets have these.
What are rings?
A planet made up of rock and heavy metals.
What is terrestrial?
This force is the resistance of an object to change direction.
What is inertia?
This is the number of Earth days that makes up one year on Mars.
What is 687?
These are made of dirty ice, dust, and gas.
What are comets?
This is the only asteroid that can be seen from Earth.
What is Vesta?
A cloud made of dust and gas
What is a nebula?
This word means "light circle" or "circle of light"
What is photosphere?
What is a huge ball of burning gas.
On this date, astronauts first walked on the moon.
What is July 20th, 1969?
This is where most of the comets in our solar system are located.
What is the Oort Cloud?
A colorless, tasteless gas that makes up most of the sun and the outer planets.
What is hydrogen?
This force attracts planets to the sun
What is gravity?
The asteroid belt is located between these two planets.
What are Mars and Jupiter?
These are three of the known dwarf planets in our galazy.
What are Pluto, Ceres, and Eris?
For 20 Earth years, this planet is the furthest away.
This word means "space traveler"
What is an astronaut?
This is the ability to do work
What is energy?
This planet may have once supported life.
What is Mars?
This planet has thin, dark rings.
What is Uranus?
This is the only planet in the solar system that humans have walked on.
What is Earth?
An imaginary line that an object spins on
What is an axis?
Dust or tiny particles that exist in the solar system.
What is star dust or cosmic dust?