Definitions
A natural object which is located outside of Earth's atmosphere.
What is a Celestial Object
An enormous ball of extremely hot, ionized gas that shines under its own power.
What is a star?
The distance that light can travel in one year.
What is a light year?
Jupiter, Saturn, Uranus, and Neptune
What are the gas giants?
Small rocky objects that orbit the sun and are smaller than planets.
What are Asteroids?
A Celestial Object made of frozen gases, ice, and dust. It also commonly has a tail.
What is a Comet?
This force holds the cloud of gas together.
What is Gravity?
The planet closest to Earth.
What is Mars.
This planet has the most rings.
What is Saturn.
Any rock that enters the atmosphere of Earth.
What is a Meteor?
This celestial object must orbit a star, it must be big enough to have enough gravity to force a spherical shape, and it must be big enough that its gravity cleared away any objects of a similar size near its orbit.
What is a Planet.
What is the closest star to Earth?
What is the Sun.
This planet has the shortest orbit.
What is Mercury.
Eris, Haumea, Makemake, and Pluto for example.
What are the Dwarf Planets?
A rock from space that hits the ground.
What is a Meteorite?
This is the category of planet that isn't made of gas.
What is a terrestrial planet.
It is the source of energy for life on Earth.
What is the Sun.
The distance from the Earth to the Sun, approximately 150 million kilometers.
What is an astronomical unit (AU)?
This planet rotates in a retrograde direction.
What is Venus?
These celestial objects are often called shooting stars.
What are Meteors?
The force of attraction between all masses in the Universe.
What is gravitational force
This process happens in stars to form Hydrogen gas into Helium gas.
What is Nuclear Fusion?
30 AU
The only two planets in our solar system without moons.
What are Mercury and Venus?
Where are most of the asteroids located in our solar system?
What is the asteroid belt.