Dark Glasses + | Seeing the Sun Safely: The Role of Dark… | Galactic Astronomy |
D'Arrest, Heinrich Ludwig + | Heinrich Louis d'Arrest: A Stellar Hunt… | Astronomers |
Darwin, George Howard + | George Howard Darwin: The Son of Evolu… | Astronomers |
Dawes, William Rutter + | William Rutter Dawes: The Clergyman Ast… | Astronomers |
Day, Apparent Solar + | The Day We Live By: Exploring the Appar… | Galactic Astronomy |
Day, Lunar + | The Lunar Day: A Celestial Dance of Tim… | Cosmology |
Day Numbers, Bessel’s + | Day Numbers, Bessel's Day Numbers, and … | Galactic Astronomy |
Day, Sidereal + | The Sidereal Day: A Stellar Perspective… | Galactic Astronomy |
Declination + | Declination: Charting the Stars' North-… | Galactic Astronomy |
Declination Circle + | Declination Circles: Navigating the Cel… | Galactic Astronomy |
Declination Parallel + | Tracing the Stars: Understanding Declin… | Galactic Astronomy |
Degree + | Degrees in the Stellar Sky: Measuring t… | Galactic Astronomy |
Deimos + | Deimos: Mars' Tiny, Distant Moon Deimo… | Solar System Astr… |
Delambre, Jean-Baptiste Joseph + | Delambre: A Giant of Astronomy and Hist… | Astronomers |
De la Rue, Warren + | Warren de la Rue: A Pioneer of Astronom… | Astronomers |
Delaunay, Charles + | Charles Delaunay: A Titan of Lunar Moti… | Astronomers |
Delphinus (the Dolphin) + | Delphinus: The Celestial Dolphin Leapin… | Constellations |
Democritus + | The Atomist Who Saw the Stars: Democrit… | Astronomers |
Deneb + | The Star with Two Names: Deneb and β Le… | Stellar Astronomy |
Deneb Adige + | Deneb: The Tail of the Swan High above… | Stellar Astronomy |