What If Earth Stopped Spinning? (Explained with Stick Figures)

Right now you're moving at up to 1,670 km/h, and you can't feel a thing. What would happen if Earth stopped spinning? Supersonic winds, a day that lasts a whole year, oceans that run to the poles, and maybe no magnetic shield. Plus the real story: Earth's spin IS changing, thanks to the Moon, the core and melting ice, and timekeepers are debating the first-ever negative leap second. CHAPTERS 0:00 Intro 0:42 Chapter 1 – How fast are we spinning 2:07 Chapter 2 – The sudden stop 3:55 Chapter 3 – A day that lasts a year 5:36 Chapter 4 – The oceans run to the poles 6:47 Chapter 5 – Magnets, satellites and your weight 8:02 Chapter 6 – Is Earth really slowing down 11:05 Chapter 7 – A planet that barely spins 11:59 Wrap-Up – Recap KEY FACTS • Equator spin speed: ~1,670 km/h; Earth's orbit: ~107,000 km/h • Without spin, oceans would migrate to the poles, leaving one equatorial megacontinent (Witold Fraczek, Esri, 2010) • A non-spinning Earth would have one day per year, with the Sun rising in the west • Days are lengthening ~2 ms per century from tidal friction; ~18 hours long 1.4 billion years ago (Meyers & Malinverno, 2018) • July 2025 brought one of the shortest days on record (~1.3 ms short); a negative leap second may be needed around 2029 (Agnew, Nature 2024) • Climate-driven day lengthening (~1.33 ms/century) is unprecedented in 3.6 million years (Kiani Shahvandi & Soja, 2026) • Venus turns once every ~243 Earth days, longer than its ~225-day year The sudden-stop scenario is a thought experiment: no known force could stop Earth's rotation. SOURCES Esri ArcUser (Fraczek, "What would happen if Earth stopped spinning"); IFLScience; ScienceDaily / PNAS 2018 (Meyers & Malinverno); Space.com; Forbes; PBS NewsHour / Nature 2024 (Agnew); University of Vienna / JGR Solid Earth 2026 (Kiani Shahvandi & Soja); NASA (Venus, Mercury, 2011 earthquake day-length estimate). #WhatIf #Earth #Science #StickFigures #Explained