If the universe is packed with trillions of stars and galaxies, the night sky should be glowing like the surface of the Sun.

The old adage goes that if you give an infinite number of monkeys an infinite amount of time hitting random keys on a typewriter, one of them will eventually type out the complete works of William ...

Add Yahoo as a preferred source to see more of our stories on Google. This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. Everything on ...

This problem has stumped scientists for thousands of years. In this video, we explore: - Why is the sky dark? (00:53) - Is the Universe Infinite? (02:18) - Solving Olber’s Paradox (05:32) - What is ...

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 ...

Speaking of improbable versus impossible, here's a familiar thought experiment. If you had an infinite number of monkeys with typewriters, or one monkey with infinite time, would they eventually type ...

Positive curvature, like that on a sphere, implies a finite universe, while zero curvature, as on a flat plane or negative ...

Although it has ancient roots, the meaning of infinity remains baffling, and it seems to have absolutely no bearing on everyday life. The mathematics of infinity is complex, but it isn’t simply a very ...