English Venus Cited by user Tercer on 09 Feb 2023 Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition.
English Orbital resonance Cited by user WolfmanSF on 01 Mar 2012 In celestial mechanics, an orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other, usually due to their…