Time travel has long been a topic of science fiction, filled with thrilling possibilities and mind-bending problems. The most ...

Researchers have spent the past few years watching a black hole re-awaken roughly 300 million light-years away from Earth.

"The three-dimensional world of ordinary experience—the universe filled with galaxies, stars, planets, houses, boulders, and ...

"The singularity is the most mysterious and problematic part of a black hole. It's where our concepts of space and time ...

A new estimate of the ghostly particle’s maximum possible mass brings physicists a tad closer to understanding the universe.

Such a connection between the smallest and largest scales in the cosmos is highly unusual in physics and suggests that dark energy is deeply tied to the quantum nature of space-time itself.

Space physics is the study of the natural phenomenon that occur in our solar system. Specifically, the sun, the particles and radiation it creates and how these affect the planets. This includes ...

Theoretical physicists James Hartle and Stephen Hawking, for example, proposed that rather than having a strict beginning as we would understand it, the universe evolved out of a "no-boundary" state ...