In theory, the fabric of space could have been curved in any way imaginable. So why is the Universe flat when we measure it?
We knew we'd find galaxies unlike any seen before in its first deep-field image. But the other images hold secrets even more profound.
Detective fiction reveals how a particular society or time period looks at crime and criminal justice.
And either way, is energy or information conserved? When two things in the Universe that “always” occur meet one another, how do you know which one will win? Gravitational waves, […]
Equations that describe time travel are fully compatible and consistent with relativity — but physics is not mathematics.
Ideas often taken for granted in the United States and Europe about what it means to be a person are, quite simply, not shared with other cultures.
Filaments, hundreds of millions of light-years long, were just caught spinning. In our own cosmic backyard, everything we see spins, rotates, and revolves in some fashion or other. Our planet […]
Psychologist Daniel Goleman shares what he learned by studying the brain waves of Olympic-level meditators, and his findings are unprecedented.
There are a few possible solutions to the problem of interstellar travel, but they largely remain within the realm of science fiction.
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.
In our common experience, you can't get something for nothing. In the quantum realm, something really can emerge from nothing.
There are two fundamentally different ways of measuring the Universe's expansion. They disagree. "Early dark energy" might save us.
We only detected our very first gravitational wave in 2015. Over the next two decades, we'll have thousands more.
“Hubble’s Law” is only an approximation, and breaks down when we need it most. From anywhere in the Universe, you can choose to look out at any other galaxy that’s present. […]
Just a small gesture or a thoughtful comment can often alter a situation, or people’s perceptions of it, in ways that relieve tensions and make them feel appreciated and included.
The inside of every black hole leads to the birth of a new Universe. Could our Universe have arisen from one?
Even if we traveled at the speed of light, we'd never catch up to these galaxies.
Astronomers used supercomputers and an international network of antennas to create the stunning map.
Scientists put the most mysterious force in the Universe to the ultimate test. When it comes to the Universe, it’s easy to make the incorrect assumption that what we see is […]
A cosmic puzzle is finally solved, as new observations answer the question of why this galaxy exists at all. For the last couple of years, astronomy has had a tremendous puzzle […]
There are an estimated two trillion galaxies within the observable Universe. Most are already unreachable, and the situation only gets worse.
Moments of social anxiety around truth tend to be accompanied by similar “fool the eye” pop culture phenomena.