AaS! 175: Should We Be Afraid of the Dipole Repeller?
Ask a Spaceman!3 Mai 2022

AaS! 175: Should We Be Afraid of the Dipole Repeller?

What is the dipole repeller? Why is it a dipole? What is it repelling? What is the Bootes Void and how is it connected to dark energy? I discuss these questions and more in today's Ask a Spaceman!

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Thanks to Cathy Rinella for editing.

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

Episoder(272)

AaS! 266: Is the Universe Made of Math?

AaS! 266: Is the Universe Made of Math?

Why is math so effective at describing the universe? What is reality is made of math? What does it mean for us to be conscious beings in a mathematical structure? I discuss these questions and more in...

17 Feb 31min

AaS! 265: Does Antimatter Fall Up?

AaS! 265: Does Antimatter Fall Up?

What is the weak equivalency principle? How was antimatter discovered and why is it the perfect thing to put gravity to the test? What did the CERN experiment discover? I discuss these questions and m...

3 Feb 27min

AaS! 264: Just How Weird is the Quantum Eraser?

AaS! 264: Just How Weird is the Quantum Eraser?

How does the double-slit experiment work? What does it teach us about reality and measurement if we try to mess with the experiment after it's already started? How does quantum complementarity guide u...

20 Jan 29min

AaS! 263: Does Free Will Exist?

AaS! 263: Does Free Will Exist?

What is causal determinism? What are some of the ways that physics can permit free will? What does emergence have to do with all of this? I discuss these questions and more in today's Ask a Spaceman! ...

6 Jan 30min

AaS! 262: Does the Universe Have Extra Dimensions?

AaS! 262: Does the Universe Have Extra Dimensions?

What do extra dimensions have to do with the strength of gravity? What is a tower of gravitons? How can we detect extra dimensions even if we can't perceive them? I discuss these questions and more in...

16 Des 202532min

AaS! 261: What are Black Dwarfs?

AaS! 261: What are Black Dwarfs?

What happens to a white dwarf when it cools off? How long does it take? Do they just stay black forever, or will something more interesting happen to them someday? I discuss these questions and more i...

2 Des 202536min

AaS! 260: What's the Big Deal with the Weak Force?

AaS! 260: What's the Big Deal with the Weak Force?

How did we discover the weak nuclear force? Why is it so strange compared to the other forces? What do mirrors have to do with all of this? I discuss these questions and more in today's Ask a Spaceman...

18 Nov 202531min

AaS! 259: Where Exactly is the Edge of the Universe?

AaS! 259: Where Exactly is the Edge of the Universe?

Is the universe infinite? What about the cosmological horizons, the limits to what we can see? Will we ever know for sure what's beyond them? I discuss these questions and more in today's Ask a Spacem...

4 Nov 202523min

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