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Olber's Paradox Calculator
Calculate expected sky brightness from Olber's paradox
📖 Olber's Paradox
The Olber's Paradox estimates the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy. It multiplies several factors: star formation rate, fraction with planets, habitable planets per star, etc.
📊 Result
💡 Tips & Information
- Paradox: infinite stars should make sky bright
- Solution: finite universe age
- Redshift from expansion
- Absorption by interstellar matter
- Fundamental cosmological question