Earth's Spin Speeds Up: July 22 Marks Second-Shortest Day Ever

Earth is spinning quicker than usual, puzzling researchers worldwide. On July 22, the planet will complete its full rotation 1.34 milliseconds early. Atomic clocks are closely monitoring this change, which may require adjustments. A 'negative leap second' might be added by 2029, a first-time occurrence.

Scientists reveal that Earth's spin used to be faster, with a day lasting only 19 hours in the past. The moon's movement away from Earth has gradually slowed down our spin, resulting in longer days until now.

Recent records show Earth breaking speed records since 2020. July 5, 2024, marked the fastest day, spinning 1.66 milliseconds quicker than normal. This year, July 10 set a new record, with July 22 expected to be the second-shortest day, followed by August 5.

Experts are uncertain about the cause of this acceleration. Some suggest it may be related to Earth's liquid core, while others mention factors like melting ice and rising seas. However, the full explanation remains elusive.

Leonid Zotov from Moscow State University believes the acceleration may cease, leading to a return to longer days. For now, scientists continue to monitor Earth's changing spin with precision.