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?
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Researchers at the Brookhaven National Laboratory recently created the heaviest exotic antimatter hypernucleus ever observed.
The “first cause” problem may forever remain unsolved, as it doesn’t fit with the way we do science.
Wind farms seem less productive when scientists incorporate more realistic atmospheric models into their output predictions.
The Big Bang’s hot glow faded away after only a few million years, leaving the Universe dark until the first stars formed. Oh, the changes!
To know how to protect its astronauts, NASA needs to first understand the threat.
From the Big Bang to dark energy, knowledge of the cosmos has sped up in the past century — but big questions linger.
You can only create or destroy matter by creating or destroying equal amounts of antimatter. So how did we become a matter-rich Universe?
A great many cosmic puzzles still remain unsolved. By embracing a broad and varied approach, particle physics heads toward a bright future.
Cosmologists are largely still in the dark about the forces that drive the Universe.
Just by observing the tiny amount of deuterium left over from the Big Bang, we can determine that dark matter and dark energy must exist.
If it weren’t for the intricate rules of quantum physics, we wouldn’t have formed neutral atoms “only” ~380,000 years after the Big Bang.
When you combine the Uncertainty Principle with Einstein’s famous equation, you get a mind-blowing result: Particles can come from nothing.
The laws of physics don’t prefer matter over antimatter. So how can we be certain that distant stars & galaxies aren’t made of antimatter?
Earth, the only rocky planet with a large, massive satellite, is greatly affected by the Moon. Destroying it would cause 7 major changes.
The properties of a ghostly particle called a neutrino are coming into focus.
Is the Universe finite or infinite? Does it go on forever or loop back on itself? Here’s what would happen if you traveled forever.
Symmetries aren’t just about folding or rotating a piece of paper, but have a profound array of applications when it comes to physics.
The hot Big Bang was an energetic, brilliantly luminous event. Today’s Universe is alight with stars. But in between, the dark ages ruled.
While humanity has been skywatching since ancient times, much of our cosmic understanding has come about only recently. Very recently.
For decades, theorists have been cooking up “theories of everything” to explain our Universe. Are all of them completely off-track?
Since its observation discovery in the 1990s, dark energy has been one of science’s biggest mysteries. Could black holes be the cause?
We can reasonably say that we understand the history of the Universe within one-trillionth of a second after the Big Bang. That’s not good enough.
When the Universe was first born, the ingredients necessary for life were nowhere to be found. Only our “lucky stars” enabled our existence.
In the early stages of the hot Big Bang, there were only free protons and neutrons: no atomic nuclei. How did the first elements form from them?
It will be immensely difficult for the Bitcoin and Ethereum blockchains to protect their competitive edge if they do not pursue a radical change.
The mutual distance between well-separated galaxies increases with time as the Universe expands. What else expands, and what doesn’t?
Here on Earth, the Sun is our primary source of light, heat, and energy. But it also poses a grave threat to human civilization.
Some solar cells are so lightweight they can sit on a soap bubble.
In many ways, we are still novices playing with toy models seeking to understand the stars.