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Planetary Science
Planetary Science 2
Planetary Science 3
Planetary Science 4
Planetary Science 5
100

The solar system includes the Sun, planets, moons, and what other objects?

What are asteroids, meteoroids, and comets?

100
The Milky Way is an example of a/an
What is a spiral galaxy?
100
The closest star to Earth.
What is the Sun?
100
This planet is does not clear its orbital path therefore is no longer a planet.
What is Pluto?
100
This "other object" is created when a comet breaks up.
What is a meteoroid?
200
A theory on how time and space began.
What is the Big Bang Theory?
200
A cluster of stars that has no specific shape because it may have collided with another galaxy is called a/an
What is an irregular galaxy?
200
The inner planets are made of this material.
What is rock?
200
A meteoroid that strikes Earth.
What is a meteorite?
200
The longest part of a stars life is called this.
What is the main sequence.
300
The galaxies expanding is support for this Law.
What is Hubble's Law?
300
A galaxy that has the shape of an ellipse.
What is an elliptical galaxy?
300
This process is how the Sun produces energy?
What is nuclear fusion?
300
A meteoroid that burns up in Earth's atmosphere.
What is a meteor?
300
A rock made of frozen gases and dust.
What is a comet?
400
A cluster of stars found in the universe is known as this.
What is galaxy?
400
The idea that the Sun is the center of the Solar System.
What is the heliocentric theory?
400

How long is the day and night

24hrs

400
A star with planets and other objects that orbit it.
What is the Solar System?
400
A medium sized star ends its life as this.
What is a white dwarf?
500
The name of our galaxy is
What is the Milky Way?
500
A ball of burning hydrogen.
What is a star?
500
The outer planets are composed of this
What is gas?
500
The Sun is this much bigger than the Earth.
What is 1,000,000 times?
500
Stars are born in this.
What is a planetary nebula?