Live Feeds
● LIVE Updated 2h ago · 15 sources tracked

Canadian study says Earth's core is quietly changing the length of a day

A Canadian study suggests that Earth's core is subtly changing the length of a day by a few milliseconds over decades. This variation is caused by a gravitational tug between the slightly misshapen solid inner core and density variations in the mantle. The changes are hard to detect and have implications for navigation and global timekeeping.

🎙️

Listen to Live Briefing

Real-time synthesized voice briefing · Live Feeds Desk

⏱ ~2 min
Speed:
RSS Source map (15)
⚡ Key Developments & Real-Time Context
Text size:
  • ✓ Earth's day length varies by several milliseconds over decades.
  • ✓ A gravitational tug between the slightly misshapen solid inner core and density variations in the mantle drives the changes.
  • ✓ The changes have implications for navigation and global timekeeping.
🛡️ Source Corroboration: 15 independent reporting domains (85% confidence) ⏱ Read time: ~2 min

What changed

A Canadian study provides evidence that the Earth's inner core is a key driver of these changes, confirming previous speculations.

Live updates

  1. Earth's core changing length of day

    A Canadian study suggests that Earth's core is subtly changing the length of a day by a few milliseconds over decades. This variation is caused by a gravitational tug between the slightly misshapen solid inner core and density variations in the mantle. The changes are hard to detect and have implications for navigation and global timekeeping.

    Why it matters

    Scientists have long known that Earth's rotation is not perfectly uniform, but the middle-range shifts that unfold over several decades have been harder to explain. Understanding these changes can help improve the accuracy of global timekeeping and navigation systems. Earth's day length varies by several milliseconds over decades, and researchers are working to pinpoint the causes.

    What is confirmed

    • Earth's day length varies by several milliseconds over decades.
    • A gravitational tug between the slightly misshapen solid inner core and density variations in the mantle drives the changes.
    • The changes have implications for navigation and global timekeeping.

    What to watch next

    • Further research to confirm the findings and understand the mechanisms
    • Potential updates to global timekeeping systems to account for the changes
    Sources used for this update (16)
    1. WIRED — A Gravitational Battle Within the Earth Is Changing the Length of Days
    2. Nature — Gravitational torque drives multidecadal variations in length of day
    3. Phys.org — Earth's deep secret: Why your day isn't quite 24 hours
    4. elderofziyon.blogspot.com — 09/24 Links Pt2: Melanie Phillips: Why ‘Fauda’ has shocked the West; Why Did It Take a Massacre of Je....
    5. www.timeout.com — Time Out Bangkok - Events, attractions and what's on in Bangkok
    6. fromtheheartproductions.com — Roy W. Dean Grant Winners - From the Heart Productions Inc
    7. yahoo.com — Canadian study says Earth's core is quietly changing the length of a day
    8. وكالة الانباء العراقية (واع) — Study Solves the Puzzle of Multi-Decadal ChanThe Mystery of Earth's Rotation » Iraqi News Agency
    9. interestingengineering.com — A tug-of-war deep beneath Earth is changing the day's length ...
    10. www.yahoo.com — Canadian study says Earth's core is quietly changing the ...
    11. thedebrief.org — Earth’s Inner Core May Be Secretly Changing the Length of Our ...
    12. www.thecooldown.com — Canadian study says Earth's core is quietly changing the ...
    confidence 85%
📊

Community Sentiment: How do you assess this situation?

Voice your perspective · Real-time aggregated sentiment from the Live Feeds community