swap_horiz Robert Kraft Alternatives

1

S. Chandrasekhar

S. Chandrasekhar was an Indian American astrophysicist whose 1930 Chandrasekhar limit explained the maximum mass of stab...

Twentieth Century Black Holes Stellar Nobel

9.7 Brilliant

2

Lyman Spitzer

Lyman Spitzer was an American astrophysicist who proposed a space telescope in 1946 and led work on plasma physics and i...

American Space Twentieth Century Interstellar

9.3 Excellent

3

Henry Norris Russell

Henry Norris Russell was an American astronomer who independently plotted stellar luminosity against spectral type in 19...

American Twentieth Century Stellar HR Diagram

9.2 Excellent

4

Willy Fowler

Willy Fowler was an American nuclear astrophysicist who shared the 1983 Nobel Prize for explaining how elements form ins...

Twentieth Century Nucleosynthesis Stellar Nobel

9.1 Excellent

5

Vesto Slipher

Vesto Slipher was an American astronomer who measured spiral nebula redshifts from 1912, evidence later central to cosmi...

Twentieth Century Galaxies Spectroscopy Redshift

8.9 Great

6

Robert Dicke

Robert Dicke was an American physicist who advanced tests of general relativity and helped motivate the 1965 search for...

American Cosmology Twentieth Century Cmb

8.9 Great

7

Neil Gehrels

Neil Gehrels was an American astrophysicist at NASA who notably served as the principal investigator for the Swift Gamma...

Modern American Space Gamma Rays

8.9 Great

8

Gerry Neugebauer

Gerry Neugebauer was an American astronomer at Caltech notable for his pioneering work in infrared astronomy and leading...

American Infrared Twentieth Century Surveys

8.9 Great

9

Walter Baade

Walter Baade was a German-American astronomer who resolved stars in Andromeda in 1944 and identified Population I and II...

German Twentieth Century Stellar Distance Scale

8.8 Great

10

Allan Sandage

Allan Sandage was an American astronomer who refined the Hubble constant and helped identify quasars while working at Mo...

American Cosmology Twentieth Century Distance Scale

8.8 Great

11

Jeremiah Ostriker

Jeremiah Ostriker is an American astrophysicist whose work shaped modern ideas on dark matter, intergalactic gas, and ga...

Modern American Cosmology Galaxies

8.8 Great

12

Michael Brown

Michael Brown is an American Caltech astronomer whose team's discovery of Eris helped trigger Pluto's 2006 reclassificat...

Modern American Planetary Kuiper Belt

8.8 Great

13

John Kormendy

John Kormendy is an American astronomer at the University of Texas at Austin highly noted for his foundational observati...

Modern American Black Holes Galaxies

8.8 Great

14

Harlow Shapley

Harlow Shapley was an American astronomer who used globular clusters in 1918 to place the Sun away from the Milky Way's...

American Twentieth Century Clusters Galactic

8.7 Great

15

Icko Iben

Icko Iben was an American astrophysicist at the University of Illinois, known for stellar evolution theory and awarded t...

American Evolution Twentieth Century Stellar

8.7 Great

16

Martin Schwarzschild

Martin Schwarzschild was a German-American astrophysicist who modeled stellar evolution and led Stratoscope balloon tele...

American Evolution Twentieth Century Stellar

8.2 Great

17

George Wallerstein

George Wallerstein was an American astronomer at the University of Washington, known for stellar abundance work and earl...

American Twentieth Century Stellar Abundances

8.1 Great

18

Kent Ford

Kent Ford was an American astronomer and instrument builder whose spectrographs enabled Vera Rubin's galaxy rotation stu...

American Twentieth Century Dark Matter Spectroscopy

8.0 Great

19

George Herbig

George Herbig was an American astronomer known for Herbig-Haro objects and for identifying young intermediate-mass stars...

American Twentieth Century Stellar Star Formation

8.0 Great

20

Andrea Dupree

Andrea Dupree is an American astrophysicist at the Center for Astrophysics Harvard and Smithsonian, noted for stellar ph...

Modern Women Spectroscopy Stellar

7.8 Good