Home / Science / Earth's Accelerating Spin Raises Alarm Over Potential Disasters
Earth's Accelerating Spin Raises Alarm Over Potential Disasters
31 Jul
Summary
- Earth experiencing historically shorter days in 2025
- Faster spin could intensify hurricanes, raise sea levels, and disrupt timekeeping
- Experts link changes to shifts in Earth's mass distribution and core dynamics

As of August 1, 2025, Earth has been experiencing a puzzling phenomenon: its rotation is accelerating, leading to historically shorter days. On July 9 and 10, the planet registered 1.3 milliseconds less than the standard 24-hour day, and this trend repeated on July 22. Experts expect another short day on August 5.
While scientists have been perplexed by this increase in Earth's rotation speed, some have attributed it to normal variations in the planet's rotation, influenced by factors like the moon's gravitational pull, atmospheric dynamics, and changes in the Earth's core. However, one astronomer, Professor David Jewitt of UCLA, has proposed a different theory.
Jewitt explains that the cosmic trend may be a result of the conservation of angular momentum, a physics principle that governs how rotating bodies behave when their mass distribution changes. As Earth's mass shifts, whether due to melting glaciers, tectonic plate movements, or atmospheric changes, it can cause the planet to spin slightly faster.
The implications of this accelerated rotation are concerning. Scientists warn that even a small increase in rotational speed could have disastrous consequences, such as intensifying hurricanes, raising sea levels, and triggering catastrophic flooding in coastal regions. A faster spin could also disrupt timekeeping systems around the world and throw off circadian rhythms, leading to increased rates of health issues.
Experts emphasize that the accumulation of these slight changes in rotation speed, though measured in fractions of a milliseconds, could be enough to cause significant disruptions. As the planet continues to spin faster, the future remains uncertain, and scientists are closely monitoring the situation to better understand and prepare for the potential impacts.