Why do some galaxies spin like giant tops, while others appear stationary? This question has puzzled astronomers for decades, ...

A network of powerful ground-based telescopes captured rare starspot-crossing events on TOI-3884b, revealing cooler patches ...

If you’ve ever played with tops, you know that some spin easily while others wobble. Ever wonder why? The answer has to do with rotational inertia, a property shared by all rotating systems. Sometimes ...

A planet's year length depends on its distance from the Sun. Planets closer to the Sun have shorter years. A planet's rotation speed is unrelated to its year length. Planets' orbital speeds vary ...

China’s massive Three Gorges Dam has reportedly caused a subtle but measurable shift in the Earth’s axis and a slight increase in the length of a day, an effect confirmed by scientists at NASA’s ...

If you feel like there’s less time in the day, you’re correct. Scientists recorded the shortest day on Earth since the invention of the atomic clock. Our planet’s rotation measured in at 1.59 ...

Earth is set to experience unusually short days in July and August 2025. The Moon's orbital position is subtly accelerating Earth's rotation. These days will be milliseconds shorter, impacting ...