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Science
A 2,700-year-old solar eclipse just revealed something surprising about Earth
A solar eclipse from 709 BCE is providing scientists with new insights into the rotation of the Earth.
Earth Rotation
7 trends tracked about this subject — the full history, oldest to newest below.
◼ Archived
Science
Leap seconds have righted global clocks 27 times. So why do timekeepers want to kill it?
Leap seconds have kept world clocks in step with Earth’s spin for 27 adjustments, but timekeepers are now debating their demise.
◼ Archived
Science
Gravitational torque drives multidecadal variations in length of day
7 news sources are covering this Science story right now — PULSE is tracking how fast it spreads.
◼ Archived
Science
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Time lords prepare to kick leap seconds into the next millennium
Global timekeepers face urgent adjustments as Earth's accelerating rotation threatens to force the scrap of the leap second.
◼ Archived
Technology
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Time lords prepare to kick leap seconds into the next millennium
1 news sources are covering this Technology story right now — PULSE is tracking how fast it spreads.
◼ Archived
Technology
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World May Ditch 'Leap Second' in Favor of 'Leap Hour'
Global timekeeping authorities are considering replacing the leap second with a leap hour as the Earth's rotation speeds up.
◼ Archived
Science
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Leap Seconds Were a Headache. Now Timekeepers Are Considering a Leap Hour
6 news sources are covering this Science story right now — PULSE is tracking how fast it spreads.