All articles tagged with #hubble sequence
Astronomers using Japan's Subaru Telescope have discovered a rare triple-ring galaxy 800 million light-years away, challenging existing galaxy classification systems like the Hubble sequence. The formation of ring galaxies remains a mystery, with theories suggesting they result from galactic collisions or resonance phenomena. This discovery could lead to a better understanding of galactic formation and evolution.
An Australian astronomer has solved a century-old mystery of galactic evolution by analyzing optical and infrared images of nearby galaxies. The study reveals that spiral galaxies reside between two types of lenticular galaxies: old and dust-poor, and dust-rich, which are formed through galaxy mergers. The research redraws the galaxy sequence and provides an evolutionary pathway through a galaxy wedding sequence. The Milky Way was likely once a dust-poor lenticular galaxy that accreted material and evolved into a spiral galaxy. The study also explains the formation of elliptical-shaped galaxies and the most massive galaxies observed in galaxy clusters.