#space research
- Atacama — A coastal desert located in northern Chile, South America, extending along a long plateau situated between the Andes and the Pacific Ocean. It is officially recognized as the driest desert in the world, excluding polar regions, being an essential site for global astronomy due to its extremely clear skies and high altitude, which hosts the largest terrestrial telescopes.
- Atalante — A graphical variant or inflected form associated with the mythological heroine Atalanta. In astronomy, 'Atalante' (36 Atalante) is the name of a large, dark main-belt asteroid discovered in 1855 by astronomer Hermann Goldschmidt. The term also designates various historical naval ships, localities, or geographical features named in honor of the famous huntress from Hellenic legends.