Doesn’t seem like much of a brainteaser, does it? Everyone knows the sky darkens at night because the sun sets … or more accurately, because our part of planet Earth rotates away from the sun, and ...

The question of whether the cosmos goes on forever is no longer just a late night thought experiment, it is a live research problem that cuts to the heart of modern physics. Astrophysicists are using ...

Physicists inclined to believe in God refer to the Cosmos as an “anthropic universe” — a universe made specifically, perfectly, for humanity. This idea was first promulgated in 1973 by Brandon Carter, ...

From recent theories developed to explain the behavior of subatomic particles and the dark recesses of space come the “multiverse” theory that proposes not one but an infinite number of universes. One ...

Cosmologists increasingly suggest that the universe may be flat — and if that’s true, it could also be infinite. In an infinite universe, anything with a non-zero probability may occur somewhere, ...

It looks so humdrum — a smear of black on a grey glass plate. Yet this negative, taken by US astronomer Edwin Hubble in 1923, highlighting a star in the Andromeda spiral galaxy, radically altered our ...