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QUGalaxies: Building Blocks of the Universe
This montage highlights the main galaxy types in Edwin Hubble’s 1926 tuning-fork classification:
• Ellipticals — smooth, featureless systems dominated by old stars
• Spirals — rotating disks with winding arms and active star formation
• Lenticulars (S0) — transitional galaxies bridging ellipticals and spirals
• Irregulars — chaotic structures rich in star-forming regions
These forms reveal billions of years of cosmic evolution shaped by gravity, mergers, and gas dynamics.
Credit: NASA/ESA Hubble Space Telescope
#NASA #Hubble #Galaxies #Astronomy #cosmology
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