Notable African-American Musicians
The following list includes African-American singers, composers, rappers, pianists, and other musicians who have contributed to the…
(Encyclopedia) observatory, orbiting, research satellite designed to study solar radiation, electromagnetic radiation from distant stars, the earth's atmosphere, or the like. Because the atmosphere…
(Encyclopedia) virtual observatory, a collection of integrated astronomical data archives and software tools that utilize computer networks to create an environment in which research can be conducted…
WAVES AND PARTICLESLIGHTHOUSETRANSMISSION OF LIGHTLIGHT SOURCESSHADOWSFIND OUT MORELight makes the world seem bright and colourful to our eyes. Light is a type of electromagnetic radiation that…
(Encyclopedia) neutron star, extremely small, extremely dense star, with as much as double the sun's mass but only a few miles in radius, in the final stage of stellar evolution. Astronomers Baade…
PUZZLE FOR THE EYEREFRACTION IN HEAT HAZEMIRAGEFIND OUT MORELight rays usually travel in straight lines, but when they pass from one material to another they can be forced to bend (change…
Source: The National Aeronautics and Space Administration (NASA) The diameter of our closest star, the Sun, is 1,392,000 kilometers. The Sun is thought to be 4.6 billion years old. The Sun is a…