According to our understanding of galaxy formation, we expect most early galaxies to be small and messy looking. REBELS-25 challenges that assumption.
Seeing a galaxy with such similarities to our own Milky Way, that is strongly rotation-dominated, challenges our understanding of how quickly galaxies in the early Universe evolve into the orderly galaxies of today's cosmos.
Finding further evidence of more evolved structures would bolster our understanding of galaxy formation processes that led to the galaxies we observe today.
REBELS-25 dates back to when the Universe was just 700 million years old, challenging long-held beliefs about the time needed for galactic evolution.
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