Astronomy: Biographies
- Ganesa
- George Ellery Hale
- George Phillips Bond
- George Washington Hough
- George Willis Ritchey
- Gerard Peter Kuiper
- Giovanni Domenico Cassini
- Giovanni Virginio Schiaparelli
- Giuseppe Piazzi
- Grote Reber
- Harlow Shapley
- Henrietta Leavitt
- Henry Norris Russell
- Heraclides of Pontus
- Hermann Bondi
- Herschel
- Hypsicles of Alexandria
- Jacobus Cornelius Kapteyn
- James Bradley
- James Edward Keeler