Early History of Space Exploration

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What is the International Space Station?

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A large spacecraft in low Earth orbit where astronauts from various countries live and work together.

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What was Project Apollo?

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A series of space missions conducted by NASA aimed at landing humans on the Moon and bringing them safely back to Earth.

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What problem do rockets help scientists overcome?

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Rockets help overcome Earth's gravity to launch spacecraft into space.

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What does the term 'lunar' mean?

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Of or related to the Moon.

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What is a space probe?

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An uncrewed spacecraft sent out into space to collect information about celestial bodies.

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What is the purpose of the International Earth Observatory?

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To monitor and study Earth's environment and climate from space.

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What was the significance of Project Gemini?

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It was a NASA program that developed space travel techniques to support the Apollo missions, including spacewalks and orbital maneuvers.

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What is the difference between a space shuttle and a space probe?

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A space shuttle is a reusable spacecraft designed to transport astronauts and cargo to and from space, while a space probe is an uncrewed vehicle that collects data from space.

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What is gravity?

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A natural phenomenon by which all things with mass are brought toward one another, including planets, stars, and galaxies.

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What is a satellite?

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An object that orbits a planet or moon, which can be natural (like the Moon) or artificial (like communication satellites).