单词 | nongravitational |
释义 | nongravitationaladjective non·grav·i·ta·tion·al ˌnän-ˌgra-və-ˈtā-shnəl -shə-nᵊl : not of, relating to, or caused by gravitation : not gravitational Each time a periodic comet revisits the inner solar system, it can experience the gentle effects of dust-bearing gas jets erupting on its sun-warmed surface. These so-called nongravitational forces can advance or retard a comet's date of return by hours or years. Daniel Pendick |
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