Symmetries aren’t just about folding or rotating a piece of paper, but have a profound array of applications when it comes to physics.
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Our Solar System’s outer reaches, and what’s in them, was predicted long before the first Oort Cloud object was ever discovered.
If nature were perfectly deterministic, atoms would almost instantly all collapse. Here’s how Heisenberg uncertainty saves the atom.
It took 9.2 billion years of cosmic evolution before our Sun and Solar System even began to form. Such a small event has led to so much.
Named “Supernova H0pe,” it shows how JWST plus gravitational lensing can be used to solve the greatest puzzle facing astronomy today.
Valles Marineris is the Solar System’s grandest canyon, many times longer, wider, and deeper than the Grand Canyon. What scarred Mars so?
Astronomers claim to have found structures so large, they shouldn’t exist. With such biased, incomplete observations, perhaps they don’t.
Dark matter must gravitate, so why couldn’t the graviton solve it? One of the most puzzling observations about the Universe is that there isn’t enough matter — at least, matter that we know […]
Today, supermassive black holes and their host galaxies tell a specific story in terms of mass. But JWST reveals a different story early on.
There are a few possible solutions to the problem of interstellar travel, but they largely remain within the realm of science fiction.
Earth, the only rocky planet with a large, massive satellite, is greatly affected by the Moon. Destroying it would cause 7 major changes.
A longstanding mismatch between theory and experiment motivated an exquisite muon measurement. At last, a theoretical solution has arrived.
When what we predict and what we measure don’t add up, that’s a sign there’s something new to learn. Could it be a new fundamental force?
Just 13.8 billion years after the hot Big Bang, we can see objects up to 46.1 billion light-years away. No, this doesn’t violate relativity.
We know of stellar mass and supermassive black holes, but intermediate mass ones have long proved elusive. Until now.
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?
A group of prominent scientists shares how research has changed them.
Einstein’s theories of relativity faced fierce opposition. One critic claimed he was attempting to subvert the scientific method.
There are two different ways to measure the expansion rate of the Universe, and they don’t agree. And no, new measurements don’t help.
Drones have a lot to learn from the landing abilities of birds.
Even if a balloon flies directly overhead, attempting to shoot it down with a conventional firearm is stupid, ineffective, and dangerous.
Perhaps the most remarkable fact about the Universe is simply that it, and everything in it, exists. But what’s the reason why?
Even with the quantum rules governing the Universe, there are limits to what matter can withstand. Beyond that, black holes are unavoidable.
The conservation of energy is one of the most fundamental laws governing our reality. But in the expanding Universe, that’s just not true.
There are an estimated two trillion galaxies within the observable Universe. Most are already unreachable, and the situation only gets worse.
On larger and larger scales, many of the same structures we see at small ones repeat themselves. Do we live in a fractal Universe?
Three of our dimensions are spatial and one is temporal, but could there be more? From any point in space, you are free to move in any direction you choose. No […]
There’s a lot to get rid of if we want to get only our Universe out of String Theory. A lot of people, when they learn about String Theory for the […]
A great many cosmic puzzles still remain unsolved. By embracing a broad and varied approach, particle physics heads toward a bright future.
Everything we observe beyond our Local Group is speeding away from us, omnidirectionally. If the Universe is expanding, where is the center?