Gravitational waves refine cosmic expansion rate ⚡ экспресс
Original: "First measurement of the Hubble constant from a combined weak lensing and gravitational-wave standard siren analysis"
Combining gravitational wave signals with galaxy surveys yields a more precise measurement of how fast the universe is growing.
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Two ultradense stars collided and sent tremors through space. By matching those shivers with a map of millions of galaxies, scientists have just clocked the universe’s growth spurt with record precision. The result: 67.9 km/s per megaparsec—hinting at a way to solve the biggest argument in cosmology.
🎯 The term 'standard siren' echoes 'standard candle,' but while candles use light, sirens use gravitational waves—a clever twist on an old cosmic yardstick.