oscillating universe
91Alan Turing — Turing redirects here. For other uses, see Turing (disambiguation). Alan Turing Turing at the time of his election to Fellowship of the Royal Society …
92Molecular cloud — See also: Solar nebula Within a few million years the light from bright stars will have boiled away this molecular cloud of gas and dust. The cloud has broken off from the Carina Nebula. Newly formed stars are visible nearby, their images… …
93Mira — For other uses, see Mira (disambiguation). Mira Mira as seen by Hubble. NASA image …
94Nikola Tesla — Tesla, aged 37, 1893, photo by Sar …
95Orbit — This article is about orbits in celestial mechanics, due to gravity. For other uses, see Orbit (disambiguation). A satellite orbiting the Earth has a tangential velocity and an inward acceleration …
96Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …
97Pale Fire — Infobox Book name = Pale Fire image caption = First US edition of Pale Fire author = Vladimir Nabokov country = United States language = English genre = publisher = G. P. Putnam s Sons release date = 1962 (corrected edition first published by… …
98Refractive index — Refraction of light at the interface between two media. In optics the refractive index or index of refraction of a substance or medium is a measure of the speed of light in that medium. It is expressed as a ratio of the speed of light in vacuum… …
99List of nearest stars — Artist s conception of a red dwarf star, the most common type of star in the Sun s stellar neighborhood, and in the universe. Although termed a red dwarf, the surface temperature of this star would give it an orange hue when viewed from close… …
100Christiaan Huygens — Born 14 April 1629 …
