Andromeda (constellation) Northern constellation named for the mythical princess; contains the Andromeda Galaxy (M31), several bright stars and deep‑sky objects, and figures prominently in history, mytholog…
Aquila (constellation) Aquila is a summer constellation located a few degrees north of the celestial equator. Represented as an eagle, it contains the bright star Altair and lies along the Milky Way with…
Argo Navis — the ancient ship constellation (former) Argo Navis Argo Navis was a large southern constellation representing Jason’s ship. No longer recognized, it was divided into Carina, Vela and Puppis; its legacy survives in star names, mytho…
Aries: constellation and astrological sign Aries Aries is the first sign of the zodiac and a northern constellation. This article explains its astronomical identity, astrological dates (tropical and sidereal), symbolism, origins…
Canis Major: Southern Constellation Containing Sirius and VY Canis Majoris Canis Major Canis Major, a southern constellation anchored by Sirius—the night sky's brightest star—and home to red hypergiant VY Canis Majoris. Explore its notable stars, history, deep-sky ob…
Chamaeleon (constellation) Chamaeleon Chamaeleon is a faint southern constellation named for the lizard, notable for its dark clouds and star-forming regions.
