Latest Arthur Eddington Stories
The RAS is pleased to announce the 2013 winners of its awards, medals and prizes.
In 1919, the Royal Astronomical Society (RAS) launched an expedition to the West African island of PrÃncipe, to observe a total solar eclipse and prove or disprove Einsteinâ€™s General Theory of Relativity.
Gravitational Lens -- A gravitational lens is formed when the light from a very distant, bright object (such as a quasar) is "bent" around a massive object (such as a massive galaxy) between the bright object and the viewer. The process is known as gravitational lensing, and was one of the predictions made by Einstein's general relativity. Description In a gravitational lens, the gravity from the massive object bends light as a lens might. As a result, the path of the light from a...
- The act of sweetening by admixture of some saccharine substance.