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Cosmology and astronomy

This course is a part of Physics, a 20-course Topic series from Khan Academy.

It's a great, big universe out there. In this section of Khan Academy, you'll learn about the brain-bending vastness of time and space. We go from plate tectonics here on Earth to entire galaxies and beyond.

This course contains 4 segments:

Scale of the universe

Things in our universe can be unimaginably large and small. In this topic, we'll try to imagine the unimaginable!

Stars, black holes and galaxies

Our universe is defined by stars. This topic explores how they came to be and where they end up. This includes a discussion of black holes and galaxies.

Earth geological and climatic history

What is the Earth made up of and how do we know? What causes the seasons? Are there longer-ranging cycles in Earth's climate?

Life on earth and in the universe

When and how did life emerge on Earth? How did humanity develop a civilization? Is there other intelligent life out there?

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Length 4 segments
Starts On Demand (Start anytime)
Cost Free
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Download Videos On all desktop and mobile devices
Language English
Subjects Science
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Khan Academy

Rating Not enough ratings
Length 4 segments
Starts On Demand (Start anytime)
Cost Free
From Khan Academy
Download Videos On all desktop and mobile devices
Language English
Subjects Science
Tags Science

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