Courses from 1000+ universities
Discover an easier way to explore affordable, credit-worthy online courses with our expanded community college catalog.
600 Free Google Certifications
Web Development
Software Development
Digital Marketing
Advanced Precalculus: Geometry, Trigonometry and Exponentials
Introduction to Animal Behaviour
Astronomy: Exploring Time and Space
Organize and share your learning with Class Central Lists.
View our Lists Showcase
Explore the Sun's physics, energy generation, and solar activity with Observatoire de Paris. Understand solar impacts on Earth's environment and technology. Includes math tools and supplementary materials.
Learn to measure celestial mass using astrophysics methods, from the Solar System to distant galaxies, with Observatoire de Paris. Explore current research and gravitational waves.
Learn the fundamentals of astrophysics with Observatoire de Paris. Explore astrometry, celestial mechanics, and time measurement. Understand the reasoning behind our current knowledge of the universe.
Learn hydrodynamics and magnetohydrodynamics with Observatoire de Paris. Explore fluid motion, magnetic fields, and energy balances. Includes practical examples and a pre-MOOC on vector analysis. 24 hours total.
Learn the fundamentals of electromagnetism with Observatoire de Paris. Explore vector analysis, Maxwell's equations, and electromagnetic waves, using astrophysical examples, especially from solar physics. 40 hours total.
Get personalized course recommendations, track subjects and courses with reminders, and more.