| Fabricius, David | David Fabricius: The Minister-Astronome… | Astronomers |
| Fabricius, Johann | Johann Fabricius: A Pioneer in Sunspot … | Astronomers |
| Faculse of the Sun | Faculae: Bright Spots on the Sun's Surf… | Galactic Astronomy |
| Falcated | The Falcated Moon, Mercury, and Venus: … | Solar System Astr… |
| Fallows, Fearon | The Pioneering Spirit of a Stargazer: T… | Astronomers |
| Fauth, Philipp Johann Heinrich | Philipp Johann Heinrich Fauth: A Lunar … | Astronomers |
| Ferguson, James | From Shepherd Boy to Astronomical Pione… | Astronomers |
| Field of View | Peering Through the Cosmic Window: Unde… | Galactic Astronomy |
| Filar Micrometer | The Filar Micrometer: A Wire-Based Tool… | Galactic Astronomy |
| First Quarter | The First Quarter Moon: A Celestial Qua… | Galactic Astronomy |
| Flammarion, Camille | Camille Flammarion: A Stargazer Who Bri… | Astronomers |
| Flamsteed, John | John Flamsteed: The Architect of a Star… | Astronomers |
| Flat | The Flat: A Tiny Mirror with a Big Role… | Galactic Astronomy |
| Fleming, Wilhelmina | Wilhelmina Fleming: A Pioneer of the St… | Astronomers |
| Flora | Flora: A Tiny World in the Asteroid Bel… | Galactic Astronomy |
| Foca | Foca: A Stellar Name with a Touch of Hi… | Stellar Astronomy |
| Foci of an Ellipse | The Foci of Ellipses: Guiding Stars in … | Galactic Astronomy |
| Focus | The Stellar Focus: Where Light Converge… | Galactic Astronomy |
| Fomalliaut | Fomalhaut: The Mouth of the Southern Fi… | Stellar Astronomy |
| Fontana, Francisco | Fontana, Francisco: A Lawyer's Glimpse … | Astronomers |
