New Books in Popular Culture cover image

James Trefil and Shobita Satyapal, "Supermassive: Black Holes at the Beginning and End of the Universe" (Smithsonian Books, 2025)

New Books in Popular Culture

00:00

Measuring black hole mass and motion

Shobita explains Doppler shifts, spectral line broadening, stellar proper motions, and how mass is inferred from orbital speeds.

Play episode from 37:33
Transcript

The AI-powered Podcast Player

Save insights by tapping your headphones, chat with episodes, discover the best highlights - and more!
App store bannerPlay store banner
Get the app