Subjects › Physics

Astronomy

Journey from the night sky to the edge of the cosmos — seasons and eclipses, planets and moons, the lives and deaths of stars, galaxies, and the expanding universe, all built on real observations.

Also available in: Español · Português

4 modules11 lessons3 hr 35 min4 quizzes

Syllabus Team

Nice to have before you start

You'll get more out of this if you've done:

Physics I: Mechanics

Handy to be comfortable with:

Scientific notation and powers of ten for very large and very small numbers
Basic algebra — rearranging and solving simple equations
The idea that light travels at a finite speed

Syllabus

Every lesson listed. Preview lessons are open — no account needed.

01The Sky and the Tools of Astronomy3 lessons

Observing the Sky: The Celestial Sphere, Constellations, and the Seasons17mfree
The Moon: Phases and Eclipses16m🔒
Light and Telescopes: Reading the Messages of Starlightquiz20m🔒

02The Solar System3 lessons

Gravity, Orbits, and the Architecture of the Solar System21m🔒
Worlds of the Solar System: Terrestrial and Giant Planets

Free

free · yours forever

This course includes

✓ 4 modules
✓ 11 lessons
✓ 3 hr 35 min
✓ 4 quizzes
✓ Certificate of completion
✓ Lifetime access, incl. updates

Free

free · yours forever

This course includes

✓ 4 modules
✓ 11 lessons
✓ 3 hr 35 min
✓ 4 quizzes
✓ Certificate of completion
✓ Lifetime access, incl. updates

Free

free forever