All the things that surround and compose us didn't always exist. But describing their origin depends on what 'nothing' means.
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You searched for: energy
The answer to this question is key to understanding why anything exists.
Deliveries of the $250k Lightyear 0 will start in November 2022.
Could Russia's plan actually destroy demand for natural gas?
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 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.
We're separating the facts about EVs from the fiction.
If you said "with the Big Bang," congratulations: that was our best answer as of ~1979. Here's what we've learned in all the time since.
For 550 million years, neutral atoms blocked the light made in stars from traveling freely through the Universe. Here's how it then changed.
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?
When white dwarfs explode, they create a type Ia supernovae. After decades of following the leading theory, here's the complete overhaul!
The idea of gravitational redshift crossed Einstein's mind years before General Relativity was complete. Here's why it had to be there.
In the spirit of the 1969 moon landing, we now have a golden opportunity to pursue “nondisruptive” creative solutions.
The Universe is 13.8 billion years old, going back to the hot Big Bang. But was that truly the beginning, and is that truly its age?
For many years, some cosmologists embraced the idea of an eternal, steady state universe. But science triumphed over philosophical prejudice.
Positron emission tomography (PET) scans use positrons — the antimatter equivalent of an electron — to locate cancer in the body.
Pro-athletes are entertainers. Being healthy means something else.
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When Einstein gave General Relativity to the world, he included an extraneous cosmological constant. How did his 'biggest blunder' occur?
Lasers are all around you. This ubiquitous technology came from our understanding of quantum physics.
A high-fat diet might trigger inflammation of the hypothalamus.
What would become the Big Bang model started from a crucial idea: that the young Universe was denser and hotter.
Carnivores, herbivores, omnivores — and now virivores.
Humanity is in trouble. Here's how aliens could help.
Our model of the Universe, dominated by dark matter and dark energy, explains almost everything we see. Almost. Here's what remains.
Over time, the Universe becomes less dominated by dark matter and more dominated by dark energy. Is one transforming into the other?
Across the subterranean United States, not all rocks were created equally.
Stars orbiting black holes were observed to move significantly slower than expected. One explanation centers on dark matter.
We thought the Big Bang started it all. Then we realized that something else came before, and it erased everything that existed prior.
Quantum wormholes are mathematically possible — but might also be physically impossible. Physicist Janna Levin explains Hawking’s famous information paradox.
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We live in a four-dimensional Universe, where matter and energy curve the fabric of spacetime. But time sure is different from space!