(Astronomy) A spiral galaxy with a central bar-shaped structure composed of stars.
A continuously accelerating increase or decrease:
A system developed by Edwin Hubble in 1936 that classifies galaxies as elliptical, spiral, barred spiral, lenticular, and irregular. Hubble speculated that galaxies might fit into an evolutionary sequence from earlier elliptical galaxies to later spiral forms, but most astronomers no longer believe this is the case. Our galaxy, the Milky Way, is a spiral galaxy.
A galaxy that does not have the clearly defined shape and structure of an elliptical, lenticular, or spiral galaxy. Irregular galaxies typically contain large amounts of gas and dust, and their stellar populations are relatively young.
Find another word for spiral-galaxy. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for spiral-galaxy, like: barred-spiral-galaxy, spiral, spiral-nebula, galaxy, hubble classification system, elliptical-galaxy, irregular-galaxy and lenticular-galaxy.