AaS! 177: How Do Black Holes Affect Their Galaxies?
Ask a Spaceman!7 Jun 2022

AaS! 177: How Do Black Holes Affect Their Galaxies?

How do giant black holes shut off star formation? How do they turn it back on? Which came first, the black hole or the galaxy? I discuss these questions and more in today's Ask a Spaceman!

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Thanks to Cathy Rinella for editing.

Hosted by Paul M. Sutter, astrophysicist and the one and only Agent to the Stars (http://www.pmsutter.com).

Episoder(273)

AaS! 63: How Are We to Understand Quantum Spin?

AaS! 63: How Are We to Understand Quantum Spin?

What does it mean for an electron to spin? Why do we have such a hard time measuring it? And why doesn't Paul Dirac get any attention anymore, anyway? I discuss these questions and more in today's Ask...

5 Sep 201733min

AaS! 62: Why Do Some Stars Blow Up?

AaS! 62: Why Do Some Stars Blow Up?

What's the balancing act happening inside stars? Why is iron the fusion limit? How long does it take for a star to blow? I discuss these questions and more in today's Ask a Spaceman! Support the show:...

15 Aug 201728min

Update and Space Radio Preview

Update and Space Radio Preview

A quick update on Patreon, Astrotours, and a preview of the new Space Radio show! Space Radio: http://www.SpaceRadioShow.com Support the show: http://www.patreon.com/pmsutter All episodes: http://www...

8 Aug 201726min

AaS! 61: Where Do Giant Magnetic Fields Come From?

AaS! 61: Where Do Giant Magnetic Fields Come From?

How does the universe generate giant magnetic fields? Is it astrophysical or primordial? How do we find them anyway? Why am I not talking about Maxwell? I discuss these questions and more in today's A...

1 Aug 201729min

AaS! 60: What's the Deal With Time Crystals?

AaS! 60: What's the Deal With Time Crystals?

What's the deal with time crystals? Do they break physics as we know it? Or are they merely…neat? What do symmetries and the conservation of energy have to do with it? I discuss these questions and mo...

18 Jul 201734min

AaS! 59: Do Black Holes Exist?

AaS! 59: Do Black Holes Exist?

Do black holes exist, or are they merely theoretical constructs? What's the evidence? And what about the singularity, surely that doesn't happen, right? I discuss these questions and more in today's A...

4 Jul 201729min

AaS! 58: Is Time Travel Possible?

AaS! 58: Is Time Travel Possible?

Does everyone have the same clock? Can we skip forward into the future? What about the past? Why does it appear to be forbidden in our universe? I discuss these questions and more in today's Ask a Spa...

20 Jun 201720min

AaS! 57: What's the Matter With Dark Matter?

AaS! 57: What's the Matter With Dark Matter?

How is the bullet cluster the "smoking gun" for dark matter? Why aren't alternate theories of gravity satisfactory? Could dark matter just be a bunch of black holes? I discuss these questions and more...

6 Jun 201733min

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