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Is Gravity An Illusion?

Season 1 Episode 17 | 10m 17s

Most of us take gravity as an assumed part of our living realities, but why? Basic physics introduces us to the concept of gravity from a Newtonian sense, but when you start factoring Einstein into an understanding of gravity, things get… weird. For example, gravity may simply not exist. Why? Watch this week’s episode of PBS Space Time and find out why gravity may be an illusion!

Aired: 06/02/15
Extras
It's possible that an event horizon is forming right behind and you won't know until its too late.
Are there no alien signals to find... or do we need to update how we search for them?
Physicists hope Planck stars can save us from black hole singularities and paradoxes.
Galaxies older than the universe? Webb's findings keep defying our best explanations.
Earth's core: solid or liquid? Yes — we know more about distant galaxies than our own interior.
Gödel found a time-travel solution in General Relativity, revealing spacetime can loop on itself.
Tardigrades can survive almost anything—even most of Mars. But one Martian chemical stops even them.
The Higgs boson may open a portal to hidden particles that could explain dark matter.
The universe expands faster. “Dark energy” may not be constant after all.
There’s a new generation of experiments that may unlock the gravity particle.
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It's possible that an event horizon is forming right behind and you won't know until its too late.
Are there no alien signals to find... or do we need to update how we search for them?
Physicists hope Planck stars can save us from black hole singularities and paradoxes.
Galaxies older than the universe? Webb's findings keep defying our best explanations.
Earth's core: solid or liquid? Yes — we know more about distant galaxies than our own interior.
Gödel found a time-travel solution in General Relativity, revealing spacetime can loop on itself.
Tardigrades can survive almost anything—even most of Mars. But one Martian chemical stops even them.
The Higgs boson may open a portal to hidden particles that could explain dark matter.
The universe expands faster. “Dark energy” may not be constant after all.
There’s a new generation of experiments that may unlock the gravity particle.