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Part 2 of 2! How did the observation of a kilonova change astronomy? How did that one observation kill off alternate models of gravity? What’s in store for the future of gravitational waves? I discuss these questions and more in today’s Ask a Spaceman!

Follow all the show updates at http://www.askaspaceman.com, and help support the show at   / pmsutter  !

Keep those questions about space, science, astronomy, astrophysics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE! Music by Jason Grady and Nick Bain.

Chapters:

00:00 One Afternoon in 2017
04:11 What is a Kilonova
09:23 What Happens During a Kilonova Explosion
14:40 How One Measurement Killed Alternate Gravity
15:50 The Future of Multi-Messenger Astronomy

Video credits: NASA, ESA, Planck, WMAP, Illustris