A backward, mirror universe could explain the existence of dark matter. If an anti-universe exists, it would run backward in time, before the Big Bang. Dark matter, then, could be right-handed ...

Is time something that flows — or just an illusion? Exploring space-time as either a fixed “block universe” or a dynamic fabric reveals deeper mysteries about existence, change, and the very nature of ...

For scientists, that has long posed a problem: According to physicists’ best current theories, matter and its counterpart, ...

A newly discovered set of mathematical equations describes how to turn any sequence of random events into a clock, scientists ...

You can journey to the ends of the earth in search of success,” 19th-century Baptist preacher Russell Conwell is said to have ...

If you think a galaxy is big, compare it to the size of the universe: it's just a tiny dot which, together with a huge number ...

Mapping the Universe’s vast structure no longer requires endless supercomputer time. Effort.jl brings cosmic modeling to laptops without sacrificing accuracy.

A new suggestion that complexity increases over time, not just in living organisms but in the nonliving world, promises to rewrite notions of time and evolution. In 1950 the Italian physicist Enrico ...

How does one time the velocity of a black hole racing across the universe? A billion-year-old impact, painstakingly sensitive detectors, and ten years of gravitational wave science were needed in this ...