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Ask a Spaceman!

AaS! 253: What Does Outer Space Sound Like?

Ask a Spaceman!

Paul M. Sutter

Astrophysics, Science, Cosmos, Holes, Black, Astronomy, Natural Sciences, Universe, Cosmology, Space, Physics

4.8853 Ratings

🗓️ 5 August 2025

⏱️ 33 minutes

🧾️ Download transcript

Summary

What would the Sun sound like if we could hear it? Does any noise at all happen in the universe? What’s the biggest sound of all? I discuss these questions and more in today’s Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE!

Big thanks to my top Patreon supporters this month: Justin G, Chris L, Alberto M, Duncan M, Corey D, Michael P, Naila, Sam R, John S, Joshua, Scott M, Rob H, Scott M, Louis M, John W, Alexis, Gilbert M, Rob W, Jessica M, Jules R, Jim L, David S, Scott R, Heather, Mike S, Pete H, Steve S, Lisa R, Kevin B, Michael B, Aileen G, Don T, Steven W, Deborah A, Michael J, Phillip L, Mark R, Alan B, Craig B, Mark F, Richard K, Stace J, Stephen J, Joe R, David P, Justin, Robert B, Sean M, Tracy F, Ella F, Thomas K, James C, Syamkumar M, Homer V, Mark D, Bruce A, Tim Z, Linda C, The Tired Jedi, Gary K, David W, dhr18, Lode D, Bob C, Red C, Stephen A, James R, Robert O, Lynn D, Allen E, Michael S, Reinaldo A, Sheryl, David W, Chris, Michael S, Erlend A, James D, Larry D, Karl W, Den K, George B, Tom B, Edward K, Catherine B, John M, Craig M, Scott K, Vivek D, Barbara C, Brad, and Azra K!

Hosted by Paul M. Sutter.

Transcript

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1:17.0

We've all heard that old saw, that there's no sound in space.

1:23.0

That all the fun parts of our favorite science fiction movies are just junk.

1:25.9

There are no pew-pue of the lasers.

1:28.5

There are no cabooms of the big bombs. there's no whoosh of the spaceship going by.

1:31.6

And you know me, one of my favorite hobbies is killing all the joy in our lives and replacing

1:36.0

it with the cold hard mathematical truth of physics, but not today.

1:40.4

And honestly, as an aside, I actually hate rating or critiquing or judging science fiction movies because if you haven't noticed, movies take place in universes that are similar to, but not exact copies of our own reality.

1:55.0

So our knowledge of physics doesn't always apply, so it's not useful to take our knowledge of physics and use it to judge

2:02.5

the physics in movies because it's a different universe. But that's a story for a different day.

2:08.5

Also, I have enough homework to grade, and when I want to watch a movie, I don't want a great

2:13.1

homework. And anyway, I digress. Outer space is almost always a vacuum, and sound waves only work

2:19.6

if there's something to wave. They are pressure waves that require a medium like air or water.

...

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