How We Know What's Out There

Astronomy taught as evidence rather than as facts to memorize. Start where navigation ends, with finding yourself by the sky, then climb the distance ladder one rung at a time: parallax, spectra, variable stars, exploding stars, redshift. Finish able to take any number in a popular astronomy article and trace it back to the thing somebody actually measured. No equations.

Meets 66 academic standards across 22 jurisdictionsshow

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