Einstein’s relativity overthrew the notion of absolute space and time, replacing them with a spacetime fabric. But is spacetime truly real?
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New tech is a double-edged sword. Integration can be expensive and perilous: Mess up the adoption and jobs are on the line.
We’ll never be able to extract any information about what’s inside a black hole’s event horizon. Here’s why a singularity is inevitable.
A cute mathematical trick can “rescale” the Universe so that it isn’t actually expanding. But can that “trick” survive all our cosmic tests?
Photons come in every wavelength you can imagine. But one particular quantum transition makes light at precisely 21 cm, and it’s magical.
A new technique that can automatically classify phases of physical systems could help scientists investigate novel materials.
All of the matter and radiation we measure today originated in a hot Big Bang long ago. The Universe was never empty, not even before that.
How efficiently could quantum engines operate?
In 1974, Stephen Hawking showed that even black holes don’t live forever, but emit radiation and eventually evaporate. Here’s how.
The spooky world of quantum mechanics might reach out and touch you — by mutating your DNA. Welcome to the weird world of quantum biology.
Our greatest tool for exploring the world inside atoms and molecules, and specifically electron transitions, just won 2023’s Nobel Prize.
A concept known as “wave-particle duality” famously applies to light. But it also applies to all matter — including you.
Protons and neutrons are held together by the strong force: with 3 colors and 3 anticolors. So why are there only 8 gluons, and not 9?
From the Big Bang to black holes, singularities are hard to avoid. The math definitely predicts them, but are they truly, physically real?
With the right material at the right temperature and a magnetic track, physics really does allow perpetual motion without energy loss.
The $21.5-billion project could involve tunneling hundreds of feet under Lake Geneva.
Uncertainty is inherent to our Universe.
Is LK-99 truly a room temperature superconductor? These 4 tests, none of which have yet been passed, will separate fact from fiction.
It may be time for a cosmological paradigm shift.
The second law of thermodynamics tells us that entropy always increases. But that doesn’t mean it was zero at the start of the Big Bang.
A new book envisions an encounter of minds between the Argentinian writer Jorge Luis Borges, the physicist Werner Heisenberg, and the philosopher Immanuel Kant.
Are physicists about to decode a mysterious field of science that could have huge implications for your health?
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Our world would be impossible without quantum mechanics — but we still don’t have a narrative of how it works.
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Humans who’ve lived through the same events often remember them differently. Could quantum physics be responsible?
If our Universe were born a little differently, there wouldn’t have been any planets, stars, galaxies, or chemically interesting reactions.
Practically all of the matter we see and interact with is made of atoms, which are mostly empty space. Then why is reality so… solid?
Here’s the case for why science can’t keep ignoring human experience.
The strongest tests of curved space are only possible around the lowest-mass black holes of all. Their small event horizons are the key.