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Gravitational-Wave Study Says the Biggest Black Holes Grow Through Repeat Mergers

An analysis of 153 LIGO–Virgo–KAGRA detections flags a mass transition near 45 solar masses that matches a predicted gap from pair-instability.

Webb and Hubble Show Massive Star Clusters Shed Birth Clouds Sooner

Gaia Finds Thousands of Solar Twins, Tying the Sun to a Mass Migration Across the Milky Way

Global Radio Array Detects Smallest Gravitational-Lensing Object Yet, Weighing About a Million Suns

Chandra Observations Reveal Rapid Atmospheric Loss on Exoplanet TOI 1227b