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 ...

There are incalculable oddities in our solar system, and myriad ways that planets are different from Earth. One surprising factor you might not have considered is how planets rotate. While we all ...

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

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

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