Sun & stars · A guided course

Our star the Sun

Follow energy from the hidden core to the images in a solar observatory.

Build a working picture of our nearest star: its layers, nuclear energy supply, moving plasma, magnetic activity, and the instruments that turn sunlight into evidence.

6 lessons48 min of lessons + 6 min challengeBeginner to Intermediate

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Suggested preparation is listed in the course · Start whenever you’re ready

NASA/SDO/AIA · Image source ↗

Useful starting points

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Learning points

— earned

Correct answer: +10
Lesson complete: +25
All lessons complete: +100
Final challenge: +50

Earn each reward once. Retries never cost points.

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Inside this course

6 lessons

Each lesson builds on the last. Read the story, explore the sources, and check your understanding.

0 of 6 lessons complete

— / 530 pointsEarned in this course

Put it all togetherThe Sun evidence challenge5 questions · 6 min · Final review

No account is needed to learn. Your correct answers keep their earned rewards.

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