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The Solar System, orbital motion and satellites

Space physics and astrophysics · Lesson 1 of 3

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Lesson 1 of 3 · Space physics and astrophysics

The Solar System, orbital motion and satellites

3 quick checks≈1% of the testFoundational

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By the end you’ll be able to

describe the Solar System as the Sun, planets, dwarf planets, moons, asteroids and comets held in orbit by gravitational attraction
compare the relative motions and features of planets, moons and other bodies in the Solar System, including the idea that planets and moons follow approximately circular or elliptical orbits

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apply the relationship between orbital speed and orbital radius to explain why bodies in closer orbits move faster and have shorter orbital periods

distinguish between natural satellites and artificial satellites and explain the uses of artificial satellites for communication, weather monitoring, Earth observation and navigation

interpret simple information about satellite orbits, including low-Earth and geostationary orbits, in terms of altitude, period, coverage and application

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