Lîsteya stêrnasan
Lîsteya stêrnas an yên herî navdar.
- Marc Aaronson 1950 – 1987)
- George Ogden Abell 1927 – 1983)
- Antonio Abetti (Îtalya, 1846 – 1928)
- Giorgio Abetti (Îtalya, 1882 – 1982)
- Charles Greeley Abbot ( 1872 – 1973)
- Charles Hitchcock Adams (1868 – 1951)
- John Couch Adams 1819 – 1892)
- Walter Sydney Adams 1876 – 1956)
- Saul Adelman (1944 -)
- Paul Oswald Ahnert (Almanya, 1897 – 1989)
- Eva Ahnert-Rohlfs (Almanya, 1912 – 1954)
- George Biddell Airy, (Îngilîzî, 1801 – 1892)
- Robert Aitken, 1864 – 1951)
- Betanî (Iraq, 850 – 929)
- Vladimir Aleksandrovich Albitzky (Rusya)
- Ebû Maşer Belxî (Îran 787 - 886)
- George Alcock (1913 – 2000)
- Harold Alden (1890 – 1964)
- Hannes Alfvén 1908 – 1995)
- Ali Kuşçu 1403 - 1474)
- Lawrence H. Aller (1913 – 2003)
- Ebdurehman Sûfî, ( 903 – 986)
- Viktor Amazaspovich Ambartsumian, (Ermenistan, 1912 – 1996)
- John August Anderson, ( 1876 – 1959)
- Andronicus of Cyrrhus
- Anders Jonas Ångström (1814 – 1874)
- Eugène Michel Antoniadi (Yewnanî, Fransa, 1870 – 1944)
- Petrus Apianus (Almanya, 1495 – 1557)
- François Arago (Fransa, 1786 – 1853)
- Sylvain Arend (Belçika, 1902 – 1992)
- Friedrich Wilhelm Argelander (Almanya, 1799 – 1875)
- Christoph Arnold (Almanya, 1650 – 1695)
- Svante Arrhenius (İsveç, 1859 – 1927)
- Arzachel (, 1028 – 1087)
- Goryu Asada (Japonya, 1734 –1799)
- Giuseppe Asclepi (Îtalya, 1706 – 1776)
- Joseph Ashbrook ( 1918 – 4 Ağustos 1980)
- Arthur Auwers (Almanya, 1838 – 1915)
- Adrien Auzout (Fransa, 1622 – 1691)
- Evdirehmanê Axtepî (Kurdistan 1850 - 1905)