A major effect of long-term weightlessness involves the loss of bone and muscle mass. Without the effects of gravity, skeletal muscle is no longer required to maintain posture and the muscle groups used in moving around in a weightless environment differ from those required in terrestrial locomotion.
Marina /ma-ri-na/ [3 sylls.] as a girls' name is pronounced mah-REE-nah. It is of Latin origin, and the meaning of Marina is from the sea. From marine. A saint's name. Shakespeare gave the name to Pericles' daughter in his play Pericles, Prince of Tyre.
Vanessa's origin is Latin, and its use, English and German. The name was first invented by the Irish poet Jonathan Swift (1667-1745) as a nickname for his lover Esther Vanhomrigh, derived from 'Van' from the Dutch surname Vanhomrigh and the feminine suffix '-essa', probably inspired by the first name Esther.anessa is a popular baby girl name. The name's popularity increased from the 1940s up to the 1980s; before that, it was of only very light use. At the modest height of its usage in 1985, 0.410% of baby girls were named Vanessa. It had a ranking of #42 then.