Tag: Abell 2744
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Dwarf Galaxies Finally Lit the Cosmic Dawn: How Tiny Powers Shaped the Universe
The Dawn Finally Lights Up: Dwarf Galaxies Take Center Stage For decades, scientists have wondered what brightened the early Universe during the cosmic dawn. New evidence suggests the unlikely culprits were ultra-faint, low-mass dwarf galaxies that flickered into life and cleared away the cold, murky hydrogen fog of intergalactic space. Using a powerful combination of…
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How the Lights Were Switched On at the Cosmic Dawn: Dwarf Galaxies as the Hidden Fireflies
The Spark That Shaped the Early Universe For decades, scientists have wondered what finally lifted the Universe out of its fog of neutral hydrogen during the cosmic dawn. A new wave of observations from the Hubble Space Telescope and the James Webb Space Telescope suggests the answer lies in the smallest galaxies imaginable: ultra-faint dwarf…