Carl SaganCarl Sagan

09 November 1934

American

Josef Allen HynekJ. Allen Hynek

01 May 1910

American

Henrietta Swan LeavittHenrietta Swan Leavitt

04 July 1868

American

Antony HewishAntony Hewish

11 May 1924

British

Martin RyleMartin Ryle

27 September 1918

British

Edwin HubbleEdwin Hubble

20 November 1889

American

Patrick MoorePatrick Moore

1947 AD

Canadian,British

Lawrence M. KraussLawrence M. Krauss

27 May 1954

American

Walter LewinWalter Lewin

29 January 1936

Jocelyn Bell BurnellJocelyn Bell Burnell

15 July 1943

British

Cecilia Payne-GaposchkinCecilia Payne-Gaposchkin

10 May 1900

British,American

Clyde TombaughClyde Tombaugh

04 February 1906

American

Continue Reading Below

Jayant NarlikarJayant Narlikar

19 July 1938

Indian

Fred HoyleFred Hoyle

24 June 1915

British

Max TegmarkMax Tegmark

05 May 1967

Swedish,American

Fritz ZwickyFritz Zwicky

14 February 1898

Swiss,American

Eugene Merle ShoemakerEugene Merle Shoemaker

28 April 1928

American

Brian SchmidtBrian Schmidt

24 February 1967

Australian,American

Continue Reading Below

Michael E. BrownMichael E. Brown

05 June 1965

American

Eric W. WeissteinEric W. Weisstein

18 March 1969

American

Amy MainzerAmy Mainzer

02 January 1974

American

Hannes AlfvénHannes Alfvén

30 May 1908

Swedish

Jan OortJan Oort

28 April 1900

Dutch

Harlow ShapleyHarlow Shapley

02 November 1885

American

Continue Reading Below

Jacob BekensteinJacob Bekenstein

01 May 1947

Israeli,Mexican

Karl Gordon HenizeKarl Gordon Henize

17 October 1926

American

Riccardo GiacconiRiccardo Giacconi

06 October 1931

Italian

Lyman SpitzerLyman Spitzer

26 June 1914

American

Guy ConsolmagnoGuy Consolmagno

19 September 1952

American

Aleksander WolszczanAleksander Wolszczan

29 April 1946

Polish

Continue Reading Below

Bernard LovellBernard Lovell

31 August 1913

British

Seth ShostakSeth Shostak

20 July 1943

American

Geoffrey MarcyGeoffrey Marcy

29 September 1954

American

Walter BaadeWalter Baade

German

Kathleen OllerenshawKathleen Ollerenshaw

01 October 1912

British

Alexei FilippenkoAlexei Filippenko

25 July 1958

American

Continue Reading Below

Gerard P. KuiperGerard P. Kuiper

07 December 1905

Dutch,American

Włodzimierz ZonnWłodzimierz Zonn

14 July 1905

Polish