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We exist What can that fact teach us about the Universe?

The anthropic principle has fascinating scientific uses, where the simple fact of our existence holds deep physical lessons. Don't abuse it!

United kingdomWikimedia commons kelvinsongBrandon carterJohn barrowStephen weinbergFred hoyleT pyle caltechFrank tiplerWillie fowlerUniversity of cambridgeStandard modelWeak anthropic principleStrong anthropic principleQuantum field theoryContemporary physics educationAnthropic principle

How hot are the hottest stars in the Universe?

At their cores, stars can reach many millions or even billions of degrees. But even that doesn't touch the hottest of all.

Wikimedia commons kelvinsongWikimedia commonsJudy schmidtFsgregs wikimedia commonsSarang wikimedia commonsGsfc ci labP crowther university of sheffieldRomano corradi isaac newton group of telescopesYuri beletskyCarnegie las campanas observatoryIgor chilingarianHarvard smithsonian cfaDynamics observatoryHoyle stateEnglish wikipediaEye nebula

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