Astronomy

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What is Astronomy?

Back

Astronomy is the scientific study of celestial objects, space, and the universe as a whole.

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What is a satellite?

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A satellite is an object that orbits a planet or star, often used to collect data about space.

Front

How do satellites help us understand outer space?

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They take pictures and collect information about planets, stars, and galaxies.

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What is the boundary of outer space?

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Outer space begins at an altitude of 62 miles above Earth.

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What is a space shuttle?

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A space shuttle is a reusable spacecraft that can carry astronauts and cargo to space.

Front

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

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Space shuttles can be reused for multiple trips, while rockets are usually used only once.

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What is a revolution in astronomy?

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A revolution is the time it takes for a celestial body to complete one orbit around another body, like the Earth around the Sun.

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What is a light-year?

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A light-year is a unit of distance that measures how far light travels in one year.

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When do we use light-years to measure distance?

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We use light-years to measure distances to stars or galaxies far away.

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What is the solar system?

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The solar system is a collection of planets, moons, asteroids, comets, and the Sun, all bound by gravity.