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The Greatest Scientists

By Ranking

By Country

By Name

By Genre

By Year

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1 - 10 - ... - 361 - 370 - 371 - 380 - 381 - 390 - 391 - 400 - 401 - 410 - 411 - 420 - 421 - 430 - 431 - 440 - 441 - 450 - 451 - 460 - 461 - 470 - ... - 991 - 1000

#: 411 - 420

# Name
Year
Country
Science
achievements
411 Viktor_Ambartsumian_1693.jpg
Viktor Ambartsumian

1908-1996
Russia
Astronomy

one of the founders of theoretical astrophysics; first to suggest that T Tauri stars are very young and that nearby stellar associations are expanding
412 Grote_Reber_1694.jpg
Grote Reber

1911-2002
USA
Astronomy

built the first radio telescope (a parabolic reflector 31 feet in diameter), thereby becoming the first radio astronomer
413 Carl_K._Seyfert_1695.jpg
Carl K. Seyfert

1911-1960
USA
Astronomy

discovered the first active galaxy, part of a group now called Seyfert galaxies
414 John_A._Wheeler_1696.jpg
John A. Wheeler

1911-2008
USA
Astronomy

made theoretical contributions to understanding of quantum gravity; coined the term ``black hole''; introduced the concept of ``spacetime foam''
415 Karl_F._von_Weizsacker_1697.jpg
Karl F. von Weizsacker

1912-2005
Germany
Astronomy

contributed to the development of the model nebular theory for the formation of the solar system; proposed (with Hans Bethe) the proton-proton reaction as the thermonuclear energy source for the sun
416 James_A._Van_Allen_1698.jpg
James A. Van Allen

1914-2006
USA
Astronomy

a space scientist best known for discovering the Earth's magnetosphere
417 Robert_H._Dicke_1700.jpg
Robert H. Dicke

1916-1997
USA
Astronomy

proposed that radiation near 1-cm wavelength is left over from the hot Big Bang; invented the microwave radiometer, used to detect this radiation
418 George_H._Herbig_1701.jpg
George H. Herbig

1920-
USA
Astronomy

independently discovered the Herbig-Haro objects, which are gas clouds associated with young stars
419 E._Margaret_Burbidge_1702.jpg
E. Margaret Burbidge

1919-
United Kingdom
Astronomy

performed observational research on the spectra of quasars and other peculiar galaxies; contributed to understanding of stellar nucleosynthesis
420 Thomas_Gold_1703.jpg
Thomas Gold

1920-
USA
Astronomy

contributed to our understanding of cosmology, the nature of pulsars as rotating neutron stars, and the origin of planetary hydrocarbons

Last updated: 2018-02-25

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