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100

What is the term used to determine that the Earth is the center of the solar system? 

Geocentric. 

100

Usually big balls of gas far away from the earth Ex. Sun. 

Stars 

100
The outward expansion of the sun. 

Solar wind of the sun. 

100

the trapping of the sun's warmth in a planet's lower atmosphere

What is the green house effect. 

100

a unit of astronomical distance equivalent to the distance that light travels in one year.

What is light years. 

200

What is the term used to determine the sun is the center of the solar center. 

Heliocentric. 

200

When the atoms come together. 

Nuclear fusion 

200

areas that appear dark on the surface of the Sun.

Sun Spots 

200

large planet composed mostly of gases, such as hydrogen and helium, with a relatively small rocky core

What is a Gas Giant. 

200

 the center of its coma.is like a snowball made of ice

what is the nucleus of a commit.

300

The shape of the path that the planet takes 

Ellipse. 

300

When the nuclear atoms spread apart. 

Nuclear Fission

300

 the galaxy that contains our Solar System, with the name describing the galaxy's appearance from Earth

Milky Way. 

300

torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars

What is a Asteroid 

300

torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars

What is asteroids. 

400

The things in space that it is in our universe. 

Solar System. 

400

200 moons 

Number of moons in the solar system

400

What is space and the solar system. 

Universe 

400

Everything in space.

What is solar system galaxy and universe. 

400

a small body moving in the solar system that would become a meteor if it entered the earth's atmosphere.

What is Meteoroid.

500

Big balls of gas or stars that are in our solar system 

Planets. 

500

What is the outer atmosphere of the sun. 

Corona of the Sun. 

500

Venus, mars, Jupiter, Pluto.

Terrestrial planets. 

500

A big rock that goes around certain plants like the ring plants and also hit earth. 

What is a commit. 
500

Light Year, a measure of distance, the distance light travels in one year; about 63,240. 

What is a metor. 

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