Article: Scale in the Solar System Questions

How many moons does Earth have?

• Two

• One

• Three

• None

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How many Mercurys could fit inside Earth if Earth were hollow?

• About 18

• About 49

• About 1,000

• About 1.3 million

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How many moons does Jupiter have at least?

• 2

• 49

• 63

• 62

Which planet is closest to the sun?

• Venus

• Earth

• Mercury

• Mars

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How far is Neptune from the sun?

• 57 million kilometers

• 4.5 billion kilometers

• 149 million kilometers

• 12 billion kilometers

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What is the main reason Earth can support life?

• It is the closest planet to the sun

• It has liquid water

• It is the largest planet

• It is the farthest from the sun

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Which planet is too hot to be habitable due to its proximity to the sun?

• Earth

• Mars

• Venus

• Neptune

What is the estimated year humans may reach Mars according to NASA?

• 2025

• 2030

• 2040

• 2050

What is the distance of Earth from the sun?

• 57 million kilometers

• 149 million kilometers

• 4.5 billion kilometers

• 12 billion kilometers

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What is a major challenge in sending humans to other planets?

• Lack of interest

• Shortage of spacecraft

• Complicated logistics and safety

• No planets to explore

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