Scientific foundations · A guided course

Measuring an enormous universe

Turn enormous numbers and beautiful images into quantities you can reason about.

Build a cosmic address, separate apparent size from physical size, and work with units, signal delays, old light, and honest scale models. Every lesson asks you to check a claim using explicit evidence and calculations.

6 lessons48 min of lessons + 6 min challengeBeginner

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No prerequisites · Learn at your own pace

NASA/JSC · Image source ↗

Learning points

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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 togetherAudit a cosmic exhibit5 questions · 6 min · Final review

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

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