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Does it have a deeper significance — or is it just a number?

Einstein hated “spooky action at a distance,” but much to his chagrin, quantum mechanics remains as spooky as ever.

From the tiniest subatomic scales to the grandest cosmic ones, solving any of these puzzles could unlock our understanding of the Universe.

Roger Babson wanted a “partial insulator, reflector, or absorber of gravity” — something, anything, that would stop or dampen it.

Is this video four minutes long? Not necessarily.

Magnetic monopoles began as a mere theoretical curiosity. They might hold the key to understanding so much more.

AI was key to making Moderna’s COVID mRNA vaccine. Its role in mRNA therapeutics will rapidly grow in the coming years.

In scientific theories, the Multiverse appears as a bug rather than as a feature. We should squash it.

In Sun-like stars, hydrogen gets fused into helium. In the Big Bang, hydrogen fusion also makes helium. But they aren’t close to the same.

At very high and very low temperatures, matter takes on properties that open up an entire Universe of remarkable new possibilities.

The concept of ‘relativistic mass’ has been around almost as long as relativity has. But is it a reasonable way to make sense of things?

In our Universe, matter is made of particles, while antimatter is made of antiparticles. But sometimes, the physical lines get real blurry.

For a substantial fraction of a second after the Big Bang, there was only a quark-gluon plasma. Here’s how protons and neutrons arose.

What do we mean by a black hole’s size? A photon sphere? The minimal stable orbit? The event horizon? The singularity? Which one is right?

The original principle of relativity, proposed by Galileo way back in the early 1600s, remains true in its unchanged form even today.

Smashing things together at unprecedented energies sounds dangerous. But it’s nothing the Universe hasn’t already seen, and survived.

Amplifying the energy within a laser, over and over, won’t get you an infinite amount of energy. There’s a fundamental limit due to physics.

Researchers at the Brookhaven National Laboratory recently created the heaviest exotic antimatter hypernucleus ever observed.

Ultracold gases in the lab could help scientists better understand the universe.

Equations that describe time travel are fully compatible and consistent with relativity — but physics is not mathematics.

The false assumption the Multiverse relies on is that something which exists requires an explanation.

You are an energy field — but not the “chakras” or “auras” kind.

Contrary to common experience, not everything needs a medium to travel through. Overcoming that assumption removes the need for an aether.

The expanding Universe, in many ways, is the ultimate out-of-equilibrium system. After enough time passes, will we eventually get there?

For every proton, there were over a billion others that annihilated away with an antimatter counterpart. So where did all that energy go?

There’s a big difference between the notions of ‘false vacuum’ and ‘true vacuum’ states. Here’s why we don’t want to live in the former.

Realism in science cannot be completely unmoored from human experience. Otherwise, realism ends up tortured with unreal paradoxes.

Light carries with it the secrets of reality in ways we cannot completely understand.

The LHC has a long, productive life ahead of it. An upgraded version, called the “High Luminosity LHC,” will be available in 2028.

The hot Big Bang is often touted as the beginning of the Universe. But there’s one piece of evidence we can’t ignore that shows otherwise.