Part of GED® Science: Earth & Space Science
GED® Science: The Solar System & Earth in Space (Deep Dive)
A deep dive into our cosmic neighborhood, expanding the single 'Solar System & Earth in Space' lesson from the GED® Earth & Space Science course into a full mini-course. You'll start with the Sun -- a star powered by nuclear fusion -- then tour the eight planets, split into the small rocky worlds and the giant gas-and-ice worlds. You'll learn why gravity keeps planets in orbit, meet the asteroids and comets, and get a feel for the staggering scale of space and how astronomers measure it. Plain language, all-new labeled diagrams, common-misconception warnings, and GED®-style practice with full explanations throughout.
📚 Course Curriculum
At the heart of everything is the Sun. It is not a special object that's different from the points of light you see at night …
Open trial session →Our solar system is the Sun plus everything its gravity holds: eight planets, their moons, and countless asteroids and comets. The planets all orbit the …
Open trial session →Why do the planets circle the Sun forever instead of drifting off or crashing in? The answer is a balance between two things: the planet's …
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The four planets closest to the Sun — Mercury, Venus, Earth, and Mars — are the terrestrial ('Earth-like') planets. They are small, dense, made mostly …
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Beyond the asteroid belt are the four giant planets — enormous, cold worlds with no solid surface to land on. [[figure:outer_planets The four giant planets: …
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The hardest thing to picture about space is how big it is. Even light — the fastest thing there is — takes time to cross …
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Course Outcomes
📝 Practice Questions
29 interactive questions with instant feedback and explanations.
Enroll for free to unlock the full practice bank after the trial sessions.