Explaining how a fly inside a rocket traveling near the speed of light cannot break the light barrier due to relativity.

Time is not absolute, and Einstein argued that different observers experience the present differently depending on relativity ...

Black holes, regions of spacetime in which gravity is so strong that nothing can escape, are intriguing and extensively ...

The Event Horizon Telescope only recently gave us the first images of the environment immediately surrounding a black hole.

Bell Inequalities, Relativity, and the Qubit, by William Stuckey, Michael Silberstein and Timothy McDevitt, Oxford University ...

The search for quantum gravity is the next big step in physics, as researchers seek to unify the physics of the very small ...

Learn what a black hole is, how it forms, and how astronomers detect it. Understand the science behind black holes and their ...

At the turn of the century, it sounded as if string theory could give us big answers about the universe. Well… has it?

String theory unifies all the forces of nature. Forces that seem very different, such as gravity and electricity, are deeply ...

The natural complexity of the universe should phase out the possibility of some advanced civilization controlling reality ...

Even though we can explore the universe with great precision, there is still a lot we don't know, according to Ulf Danielsson ...

We live in the present, moving through time. As events come and go, everything fades into the past. But what is time, really?