https://www.live-feeds.com/feed/thorium-clocks-start-ticking-with-lasersContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/thorium-clocks-start-ticking-with-lasershttps://www.live-feeds.com/feed/thorium-clocks-start-ticking-with-lasers#u122579Thu, 15 Oct 2026 01:23:08 +0000Researchers in Vienna and Beijing have successfully built the first nuclear clocks using thorium-229, achieving timekeeping with lasers. Two independent teams have locked lasers to the nucleus of thorium-229, with one clock running untouched for over a day. This development could potentially make atomic clocks obsolete. The thorium-229 optical nuclear clock with a feedback loop has been hailed as a superior timekeeping technology.Why it mattersNuclear clocks use the nucleus of an atom to measure time, which could provide more precise timekeeping than atomic clocks that use electrons. The devel