His work concentrated on three fields: the determination of the Hubble constant (H0) using the Tully–Fisher relation, the study of carbon rich stars, and the velocity distribution of those stars in dwarf spheroidal galaxies.
Aaronson was one of the first astronomers to attempt to image dark matter using infrared imaging. He imaged infrared halos of unknown matter around galaxies that could be dark matter.
George Ogden Abell
United States
1927
1983
Hiroshi Abe
Japan
1958
Michaël Gillon
Belgium
1974
Antonio Abetti
Italy
1847
1928
Giorgio Abetti
Italy
1882
1982
Charles Greeley Abbot
United States
1872
1973
Charles Hitchcock Adams
United States
1868
1951
John Couch Adams
United Kingdom
1819
1892
His most famous achievement was predicting the existence and position of Neptune, using only mathematics.