A rainbow spans a continuous spectrum of colors. They are optical and meteorological phenomena that cause a spectrum of light to appear...

An asteroid is any of numerous small planetary bodies that revolve around the sun. Asteroids are also called minor planets or planetoids....

The surface of saturated material in an aquifer is known as the water table. An aquifer is a geologic formation, group of formations, or...

Amino acids are the building blocks (monomers) of proteins Two individual amino acids can be linked to form a larger molecule, with the...

The Gobi is 500,000 square miles (1,300,000 square km) and defined as lying between the Altai Mountains and Hangayn Mountains to the...