Albert Einstein's humorous quote offers a profound lesson for children: never stop questioning or learning. The universe's ...

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 ...

Imagine an infinite universe expanding in all directions. Visualization is impossible. Questions abound. But cosmologist Wendy Freedman is able to conceive of these heady abstractions in concrete, ...

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 ...

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 ...