Rainbows happen when sunlight is refracted and dispersed in drops of rain or mist. Water is denser than air, so sunlight ...

Have you ever wondered how far Jupiter is from Mars or Venus from Earth? Our handy calculator makes it easy to find out! All distances are average and ...

Einstein Rings are a type of gravitational lensing in which the light from a galaxy or star passes a large object, like another galaxy or black hole, and is bent around it. If the alignment is right, ...