Uploaded January 2026 | Updated September 2026, 3 weeks ago
Paul M. Sutter, Ph.D.
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A hidden fifth force The idea that dark matter and dark energy are secretly linked
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![Whats Really Inside Empty Space? [Ask a Spaceman]](https://i.ytimg.com/vi/wRsWWR8BVIo/mqdefault.jpg "Whats Really Inside Empty Space? [Ask a Spaceman]
Support: http://www.patreon.com/pmsutter
0:00 - Intro
2:20 - Whole Lotta Nothing
10:14 - Ottos Vacuum
18:03 - Theres Always Something
22:07 - Vacuum Energy
27:29 - Is Space Really Empty?
36:24 - Gravitational Waves
39:40 - Thank You
Follow all the show updates at http://www.askaspaceman.com, and help support the show at http://www.patreon.com/pmsutter!
What’s floating around in space between all the stuff? Are there any truly empty places in the universe? What is the “fabric” of spacetime? I discuss these questions and more in today’s Ask a Spaceman!
Keep those questions about space, science, astronomy, astrophysics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE!")
