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Astronomy
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Zodiac
Which civilization divided the ecliptic into 12 equal 'signs'?
Egyptian
Greek
Roman
Babylonian
Persian
Indian
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Why?
Sun
What is the primary composition of the Sun?
Oxygen and carbon
Iron and neon
Hydrogen and helium
Gold and uranium
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Sun
What is the estimated mass of the Sun compared to Earth?
The Sun is lighter than Earth
The Sun is about the same mass as Earth
The Sun is 330,000 times more massive than Earth
The Sun is 99.86% the mass of Earth
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Sun
What is the main source of energy for life on Earth?
Wind
Geothermal energy
The Sun
Nuclear power
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Planet
What was the first planet discovered in the 20th century?
Uranus
Neptune
Pluto
Saturn
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Planet
Which planets of the Solar System possess a considerable atmosphere?
Mercury
Venus and Mars
All planets of the Solar System
Jupiter and Saturn
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Planet
What is the best available theory of planet formation?
The big bang theory
The nebular hypothesis
The steady state theory
The electric universe theory
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June
In the Northern Hemisphere, what is the beginning of the traditional astronomical summer?
June 1
June 15
June 21
June 30
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Why?
Planet Nine
What is the proposed origin of Planet Nine?
It was formed in situ
It was ejected from the neighborhood of the known giant planets
It was captured from another star
All of the above
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Why?
Planet Nine
What is the estimated mass of Planet Nine?
10 times the mass of Earth
5 times the mass of Earth
20 times the mass of Earth
2 times the mass of Earth
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