When you look up at the night sky, it appears unchanging. But if you look deep enough you will find that the sky is in fact ...

Using the James Webb Space Telescope, astronomers have investigated 70 dusty galaxies at the very edge of the universe that ...

They show up as a mathematical solution in general relativity, basically as a time-reversed version of a black hole. Some ...

Faint structures play a crucial role in cosmic development, and scientists are only just beginning to grasp their full extent and role in shaping the universe.

Astronomy does not belong off Earth. It belongs wherever the universe can be observed — and that necessarily includes the surface of the planet humans live on. Kelsey Johnson: Past President of the ...

We have known for several decades that the universe is expanding. Scientists use multiple techniques to measure the present-day expansion rate of the universe, known as the Hubble constant. These ...

The shape of the cosmos depends on a balance of two competing forces: the pull of gravity and the expansion driven by dark ...

Quasicrystals are orderly structures that never repeat. Scientists just showed they can exist in space and time.

Scientists discovered a distant jellyfish galaxy with star-forming "tails" stretching back 8.5 billion years.

A physicist proposes that the universe might not be empty but act like a viscous fluid, resisting expansion. This bold idea ...

An astrophysicist explains what wormholes are and how these theoretical space-time tunnels have popped up in the solutions to a set of decadesold equations.