periapsis, point of periapsis
(noun) (astronomy) the point in an orbit closest to the body being orbited
Source: WordNet® 3.1
periapsis (plural periapsides)
(astronomy) The point of a body's elliptical orbit about the system's centre of mass where the distance between the body and the centre of mass is at its minimum.
In the case of some particular celestial bodies, specialised terms are used.
• pericenter
• apoapsis
Source: Wiktionary
18 September 2024
(noun) a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust
International Coffee Day (September 29) is an occasion to promote and celebrate coffee as a beverage, with events occurring in places across the world. A day to promote fair trade coffee and raise awareness for the coffee growers’ plight. Other countries celebrate this event on October 1.
