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Hubble Spies Tiny, Ancient 'Ghost Galaxies' - Universe Today
They’re out there; tiny, extremely faint and incredibly ancient dwarf galaxies with so few stars that scientists call them ‘ghost galaxies.’ NASA’s Hubble Space Telescope captured images of three of these small-fry galaxies in hopes of unraveling a mystery 13 billion years in the making. Astronomers believe these tiny, ghost-like galaxies spotted alongside the Milky … Continue reading "Hubble Spies Tiny, Ancient ‘Ghost Galaxies’"