Most people think the multiverse is just about "what-if" scenarios – other versions of you where you took that job in another ...

Only about 5% of the universe is composed of normal matter that we can directly observe, while the remaining 95% is widely ...

One issue is that when scientists calculate what the Hubble constant should be, it doesn’t quite match observations of the ...

The cosmological constant is the mathematical description of the energy that drives the ever-accelerating expansion of the ...

The team successfully built the largest, highest-resolution 3D map of the cosmos ever constructed. The completed map charts ...

If you understand how things work,” she says, “you can do things with that knowledge.” But she’s in this to solve an ...

The fundamental constants of nature seem perfectly tuned to allow life to exist. If they were even a little bit different, we simply wouldn't be here. Given this grave existential fact, we are forced ...

Scientists studying a mysterious effect called cosmic birefringence—a subtle twist in the polarization of the universe’s oldest light—have developed a new way to reduce uncertainty in how it’s ...

The particles that are in an atom: protons, neutrons and electrons The particles that are in protons and neutrons: quarks The four fundamental forces: gravity, electromagnetism, the strong force and ...

Astrophysicists have presumed for nearly a century that the universe will just keep expanding for all eternity, driven by an invisible force called dark energy. But new data suggest that this is ...

Seen from our blue marble as it spins among the hundreds of millions of star systems in the Milky Way, the universe around us ...

Some of the heaviest atoms in the universe barely exist long enough to be ...