Pure Mathematics + Cybersecurity
Break a secret with number theory: how RSA works
Encrypt and decrypt a message with small primes by hand, then in code, and see why large primes matter.
- Advanced
- 1–2 weeks
- Free
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Astronomy and Space · Planetary Science
Calculate the height of lunar mountains from a photo
Measure shadow lengths in a high-resolution Moon image and estimate the height of a crater rim.
- Advanced
- 2–7 days
- Free
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