As atmospheric observations of exoplanets become increasingly precise, it is more important than ever to correctly account ...

Can a movement many feet below our feet quietly change the Earth’s rotation? Over 3,000 miles below the ground, the Earth’s ...

A huge reservoir nestling in the heart of the Three Gorges Dam is to blame for the disruptive patterns in Earth's rotation.

Ever since its formation around 4.5 billion years ago, Earth's rotation has been gradually slowing down, and its days have ...

Climate change is causing so much polar ice melt that it's slowing down Earth's rotation and — here's the kicker — it will alter how we measure time in the future. That's the outrageous conclusion ...

Because oxygen seeps (diffuses) out of mats slowly, the timing of sunlight becomes a big deal. Short days mean the sun sets ...

Venus is, let's face it, a weirdo. Often called Earth's "twin" due to its size and density, the planet is actually far different from our own. The rest of this article is behind a paywall. Please sign ...

Tracking the rotation speed of solid planets, like the Earth and Mars, is a relatively simple task: Just measure the time it takes for a surface feature to roll into view again. But giant gas planets ...

On Mars, things are a lot more static. It’s a single-plate planet with incredibly slow mixing. When InSight peered into the ...

Add this to Mars’ long list of mysteries. NASA’s now defunct InSight Mars Lander has produced data that indicates that the red planet’s rotation rate, the rate at which it spins on its axis, is ...

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 ...