For the first time, scientists have detected two black hole mergers with spins so unusual they may reveal a new generation of ...

Researchers have unveiled a new model for the universe’s birth that replaces cosmic inflation with gravitational waves as the ...

Wormholes, conceptual tunnels slicing through spacetime, offer a theoretical shortcut between two distant cosmic points.

Physicists have analyzed two enormous black hole mergers that happened one month apart and have come up with tantalizing ...

Astrophysicists at the University of Chicago have developed physics-based models suggesting that dark energy could be ...

The model questions the popular inflation theory, which most experts believe was facilitated after the universe's birth. The ...

Two recently observed black hole mergers, occurring just weeks apart in late 2024, have opened an extraordinary new window ...

If that were to happen, it could lead to a theory of quantum gravity that would combine Einstein’s general relativity with quantum mechanics. It would also imply that our universe is in truth a ...

Dark-energy evidence suggests the universe will end in a “big crunch” roughly 20 billion years from now. The universe is nearing the halfway point of what may be a 33-billion-year lifespan, according ...

The universe rarely fails to amaze. One of its latest surprises—nicknamed the “Einstein zig-zag”—reveals a stunning arrangement of galaxies and a distant quasar. Together, they produce a gravitational ...

Einstein was a great thinker who made plenty of mistakes—errors that sometimes led to more meaningful discoveries in physics, ...

It's a plot device beloved by science fiction: our entire universe might be a simulation running on some advanced ...