Can the Three Gorges Dam in China slow the Earth's rotation? The Three Gorges Dam is a hydroelectric gravity dam that spans the Yangtze River, in Central China. It is the world’s largest hydroelectric ...

Earth's rotation is subtly accelerating, and scientists are intently tracking the trend. Usually, our planet takes 24 hours, or 86,400 seconds, to finish one complete spin. However, on July 9, 2025, ...

NASA images show asteroid 2025 OW spinning at extreme speed, improving its orbit forecast and revealing surface details only ...

Pegasi, following the full-speed spin-up of gyro #2 yesterday. Each full-speed spin-up takes most of a day. Helium gas is flowed over the gyro for 90 seconds, and tests are run to ensure that the ...

We don’t often think about gravity, the invisible force that anchors us to Earth, as it always seems constant and dependable. However, it will slightly vary, sometimes by enough to make you weigh ...

How do you explore the interior of a planet without ever touching down on it? Start by watching the way the planet spins, then measure how your spacecraft orbits it — very, very carefully. This is ...

Simulations and satellite data reveal that Earth's magnetic field is more complex than scientists had thought. Scientists ...

If you’re the kind of person who gets a lot done, you’re grateful for every one of the 86,400 seconds that make up a day. On July 9, however, as well as on July 22, and August 5, you won’t get your ...