Transit timing variations are changes in a planet’s orbital timing caused by gravitational interactions with nearby planets.

An international team of astronomers has reported the discovery of two exoplanets orbiting a nearby star known as HD 101581.

Additionally, researchers can calculate a planet’s surface temperature from the world’s orbital period and its star’s temperature. Since its launch in 2009, NASA's Kepler mission has used ...

All three of orbital cycles — called ... The African Humid Period exemplifies the dramatic climate transitions that our planet experiences as a result of subtle changes in the Earth's orbit.

Nicknamed "TIDYE-1b" by researchers, the new planet has been shown to have an orbital period of 8.83 days, according to a paper published Thursday in Nature. It has a radius about 10.7 times ...

The graph shows how the orbital speed of a planet ... a planet at the same rate as the planet. A geostationary satellite orbiting Earth has a period of 24 hours. satellites take 24 hours to ...

These planets are typically characterized by their small size, proximity to their stars, and extremely short orbital periods. TOI-3261 b is one of only four known exoplanets in this category.