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Alvan Graham Clark
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View of the Andromeda Galaxy (Messier 31, M31).
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Michael Faraday (L) English physicist and chemist (electromagnetism) and John Frederic Daniell (R) British chemist and meteorologist who invented the Daniell cell.
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
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Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)
How Fast Is the Universe Expanding?
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Facsimile of one of William Henry Ireland's forgeries, a primitive self-portrait of William Shakespeare(tinted engraving). Published for Samuel Ireland, Norfolk Street, Strand, December 1, 1795. (W.H. Ireland, forgery)
The Time a Law Clerk Successfully Forged a New Shakespeare Play to Impress His Dad
The Prado Museum facade at the Diego Velaszquez memorial. Established in 1819, the museum is considered the best collection of Spanish art and one of the world's finest collections of European art. Madrid, Spain
20 Paintings You Have to Visit at the Museo del Prado in Madrid
Panama Canal infographic
Timeline and Map of the Panama Canal
Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro
Why Is Christmas in December?
Srinivasa Ramanujan, Indian mathematician and autodidact.
6 Interesting Facts about Srinivasa Ramanujan
Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics
10 Best Hockey Players of All Time
King Cobra snake in Malaysia. (reptile)
9 of the World’s Deadliest Snakes

Alvan Graham Clark

American astronomer

Learn about this topic in these articles:

Clark family

  • In Clark Family

    Alvan Graham Clark (b. July 10, 1832, Fall River, Mass.—d. June 9, 1897, Cambridge, Mass.), joined his father and brother in the business in the early 1850s. Recognition of the family’s superb lenses was slow to come. The discovery of two double stars by the…

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design of Yerkes Observatory telescope

discovery of Sirius B

  • Sirius
    In Sirius

    …first seen in 1862 by Alvan Clark, an American astronomer and telescope maker.

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