The Sun photographed at 304 angstroms by the Atmospheric Imaging Assembly (AIA 304) of NASA's Solar Dynamics Observatory (SDO)

How Earthquakes Helped Us Map the Interior of the Sun

Temperatures in the Sun’s core exceed 10 million degrees Celsius. But how on Earth did we actually come to know that?
Jack Parsons

Sex-Cult Rocket Man

Jack Parsons, one of the “suicide squad” trio of young rocket-boy founders of Jet Propulsion Laboratory, had an improbable extracurricular life.