How Could the Universe Come From Nothing?
Oct 21, 2026 · 25 min · 28 segments
Learn more about your ad choices. Visit megaphone.fm/adchoices
Oct 21, 2026 · 25 min · 28 segments
Learn more about your ad choices. Visit megaphone.fm/adchoices
Why do we even think the universe came from nothing? To answer that, we need to first understand what nothing means in physics.
When you hear that word, you might imagine a complete void, no matter, no energy, not even space or time, absolute nothingness.
In quantum physics, even the vacuum of space with no particles or radiation is still teeming with activity.
These are quantum fluctuations where particles and their antiparticles spontaneously appear and annihilate each other constantly.
Empty space is more like a bubbling soup of virtual particles popping in and out of existence.
Now you might say, wait a minute, if these fluctuations existed before the universe came to be, before there was time, How could it happen because don't these fluctuations require time to exist? The answer is no.
We use time language to describe it, but the math says that no external time is necessary.
You might say now, ok fine, but doesn't this violate the conservation of energy law? Well, the fact is that it might not, if the total energy is zero.
How could it be zero when there is so much matter, light, and energy around? Because gravity's energy is negative.
In a uniform expanding universe, the negative gravitational energy could cancel out the positive energy of the matter and radiation.
If true, it means creating a universe from nothing doesn't actually require any net energy.
It's like borrowing $10 from the bank with your left hand, while at the same time handing the bank $10 with your right hand.
This idea is very important because if the universe can exist with zero total energy, quantum physics might allow it to arise spontaneously.
Why do we even think the universe came from nothing? To answer that, we need to first understand what nothing means in physics.
When you hear that word, you might imagine a complete void, no matter, no energy, not even space or time, absolute nothingness.
In quantum physics, even the vacuum of space with no particles or radiation is still teeming with activity.
These are quantum fluctuations where particles and their antiparticles spontaneously appear and annihilate each other constantly.
Empty space is more like a bubbling soup of virtual particles popping in and out of existence.
Now you might say, wait a minute, if these fluctuations existed before the universe came to be, before there was time, How could it happen because don't these fluctuations require time to exist? The answer is no.
We use time language to describe it, but the math says that no external time is necessary.
You might say now, ok fine, but doesn't this violate the conservation of energy law? Well, the fact is that it might not, if the total energy is zero.
How could it be zero when there is so much matter, light, and energy around? Because gravity's energy is negative.
In a uniform expanding universe, the negative gravitational energy could cancel out the positive energy of the matter and radiation.
If true, it means creating a universe from nothing doesn't actually require any net energy.
It's like borrowing $10 from the bank with your left hand, while at the same time handing the bank $10 with your right hand.
This idea is very important because if the universe can exist with zero total energy, quantum physics might allow it to arise spontaneously.
The rest of this transcript — segmented and speaker-labeled, so you land on the exact moment something was said
Search every transcript — by keyword, by phrase, or by meaning, across every show Radar indexes
Trends — what is surging across podcasts, measured against its own baseline
Alerts — when a name you follow appears in a newly indexed episode
No account is needed to search Radar.