Well, any of us who has ever looked through a telescope could say ... times (12 divided by four). Galileo played with this formula until, by the late fall of 1609, he'd made a spyglass that ...

John Steele Gordon on “Dinosaurs at the Dinner Party” by Edward Dolnick.

In “Pillars of Creation,” Richard Panek shows how the James Webb Space Telescope is altering our view of the cosmos ...