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Spacetime
Starts With A Bang!
The Universe is out there, waiting for you to discover it.
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Spacetime
Ethan Siegel
in
Starts With A Bang!
Oct 25, 2023
Relativity and the physics of immortality
Nothing lives forever, at least, not in the physical…
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769
16 responses
Ethan Siegel
in
Starts With A Bang!
Jul 6, 2023
All of spacetime is rippling with gravitational waves
After 15 years of monitoring 68 objects known as…
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884
8 responses
Ethan Siegel
in
Starts With A Bang!
May 18, 2023
Is there any evidence that the “aether” exists?
Contrary to common experience, not everything needs a…
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295
16 responses
Ethan Siegel
in
Starts With A Bang!
May 11, 2023
Spacetime: is it real and physical, or just a calculational tool?
Einstein’s relativity overthrew the…
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1.4K
31 responses
Ethan Siegel
in
Starts With A Bang!
Mar 17, 2023
Ask Ethan: What does ER=EPR really mean?
Two very different ideas, wormholes and quantum entanglement…
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508
5 responses
Ethan Siegel
in
Starts With A Bang!
Nov 30, 2022
How low-mass black holes bend space the most
The strongest tests of curved space are only possible…
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418
3 responses
Ethan Siegel
in
Starts With A Bang!
Aug 30, 2022
Without Einstein, we might have missed General Relativity
Einstein’s “happiest thought” led to General…
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513
8 responses
Ethan Siegel
in
Starts With A Bang!
Aug 9, 2022
Why gravitational waves are the future of astronomy
We only detected our very first gravitational wave…
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418
5 responses
Ethan Siegel
in
Starts With A Bang!
Jul 28, 2022
Time isn’t simply just another dimension
We live in a four-dimensional Universe, where matter and…
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880
21 responses
Ethan Siegel
in
Starts With A Bang!
Apr 13, 2022
Time dilation is real, and your head ages faster than your feet
The idea of “absolute time” was our…
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348
8 responses