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October’s night sky is full of cosmic tricks and treats

October’s skies are packed with celestial surprises, from Jupiter disappearing behind the Moon to two meteor showers lighting up the darkness. NASA highlights four must-see events, including shooting stars from Halley’s Comet and a glowing Hunter’s Moon just before Halloween.

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First Thorium Nuclear Clocks Begin to Tick

Researchers in Vienna and Beijing have independently built the first nuclear clocks based on oscillations inside thorium nuclei, marking a major milestone for a field that could eventually produce highly portable, ultra-precise timekeepers. The clocks are already precise enough to lose only about a second over millions of years.

  • Researchers in Vienna and Beijing created world's first thorium nuclear clocks.
  • Clocks exhibit precision, losing only one second over millions of years.
  • Potential to detect dark matter particles with nuclear clocks.

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