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Hubble Reveals Ancient Star City | Science News
NASA dropped a jaw-dropping Hubble image to celebrate America’s 250th birthday, spotlighting Messier 3 — a cosmic time capsule packed with 500,000 ancient stars. This globular cluster pulses with RR Lyrae variable stars, acting like cosmic yardsticks to measure galactic distances, and hides mysterious “blue stragglers” that defied aging — stars reborn through stellar theft. Even wilder? Scientists think Messier 3 might be the ghost of a merged galaxy, revealing how the Milky Way devoured smaller neighbors over billions of years. Hubble’s peering into these stellar cities to rewrite the cosmic…
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