Category Công nghệ

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Earth’s Spin to Speed Up Briefly, Causing Shorter Days This Summer

Scientists report that Earth will briefly spin faster on July 9, 22, and August 5, shortening those summer days by 1.3 to 1.5 milliseconds. Though undetectable in daily life, this shift offers clues to how lunar gravity and seasonal changes affect planetary dynamics. Experts note that while timekeeping systems like GPS are unaffected, this rare speed-up may one day prompt a “negative leap second” to sync atomic clocks. It’s a subtle, fascinating reminder of how our planet’s rhythm change over time.

James Webb Telescope Spots Rare ‘Cosmic Owl’ Formed by Colliding Galaxies

NASA’s James Webb Space Telescope has unveiled the “Cosmic Owl,” a jaw-dropping image of two colliding ring galaxies forming a structure that resembles an owl’s face. This double-ring formation is extraordinarily rare, and the event is shedding light on galaxy evolution, black hole dynamics, and rapid star formation. Led by Ph.D. student Mingyu Li of Tsinghua University, researchers say this discovery serves as a powerful lab for studying how galaxies interact and grow. The “Cosmic Owl” may also help scientists understand how young galaxies amassed stars at astonishing speeds.