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The observation that everything we know is made out of matter and not antimatter is one of nature’s greatest puzzles. Will we ever solve it?
Despite the Sun’s high core temperatures, particles can’t quite overcome their mutual electric repulsion. Good thing for quantum physics!
There are many theories of gravity out there, and many interpretations of wide binary star data. What have we really learned from it all?
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?
“Think defensively about how you can protect yourself from an almost inevitable attack, rather than assuming you’ll avoid harm.”
The laws of physics obey certain symmetries and defy others. It’s theoretically tempting to add new ones, but reality doesn’t agree.
Women have made incredible gains into STEM fields, but they continue to face gender biases in the workplace.
The combination of charge conjugation, parity, and time-reversal symmetry is known as CPT. And it must never be broken. Ever.
Before we formed stars, atoms, elements, or even got rid of our antimatter, the Big Bang made neutrinos. And we finally found them.
The way to understand the earliest moments of creation is to recreate those conditions and study them. Why would we stop now?
The zero-point energy of empty space is not zero. Even with all the physics we know, we have no idea how to calculate what it ought to be.
Today, every Homo species is extinct besides humans. But one of our close evolutionary relatives still lives on in our DNA.
Why are the rest masses of fundamental particles related like this? When it comes to the nature of matter in the Universe, the Standard Model describes the known elementary particles perfectly […]
If you think ‘particles are matter’ and ‘antiparticles are antimatter,’ think again. In this Universe, there are certain rules that have never been observed to be broken. Some of these […]
Every December, the Geminid meteor shower reaches its peak. Its 2021 show will be spectacular, but only if you do it right.
Dark matter’s hallmark is that it gravitates, but shows no sign of interacting under any other force. Does that mean we’ll never detect it?
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?
For the cosmos, it’s all too easy being green. Stars come in a wide variety of colors, but never green. Stars form in a wide variety of sizes, colors and masses, […]
It peaks the nights of August 11–13, but it’s no longer the year’s most reliable meteor shower. Every year, beginning in mid-July, planet Earth commences passing through an enormous debris […]
There are an estimated two trillion galaxies within the observable Universe. Most are already unreachable, and the situation only gets worse.
The bizarre discovery could pave the way for advances in regenerative medicine for humans.
Planets are either rocky, like Earth, or gas-rich, like Neptune, with no in-between. What are the different types of planets that exist in the Universe? If all you could see […]
After years of analysis, the Event Horizon Telescope team has finally revealed what the Milky Way’s central black hole looks like.
Learning styles are supposed to help learners take ownership of their education, but research doesn’t back up this well-intentioned myth.
Most of us will never run a 4 minute mile. But on a bicycle, almost anyone can do it. As human beings, we often take for granted how our bodies work. […]
More energy means more potential for discovery, but we’re topped out. If your goal is to discover something completely novel, you have to look in a way that no one else […]
Think you can hide your feelings pretty easily?
If you think it’s just three quarks held together by gluons, you’ll want to read this. At a fundamental level, the Universe is composed of indivisible particles. From macroscopic scales down […]
Migrating our planet to a safer orbit might be the only way to preserve Earth after all the ice melts.