The planets are held in their orbits ___ the gravitational pull of the Sun. A. by B. with C. through D. from 相关知识点: 试题来源: 解析 A。“被……所吸引”用“be held in...by...”,by 在这里表示方式、手段。反馈 收藏
It's made of hot gas and possibly dark matter. Gravity All of these components orbit the nucleus and are held together by gravity. Because gravity depends upon mass, you might think that most of a galaxy's mass would lie in the galactic disk or near the center of the disk. ...
To destroy the moon, you would need to provideat least 1.24×1029J of energyto exceed the Moon's gravitational binding energy. (This provides a lower bound on the energy to "blow up" the moon.) A megaton of TNT releases 4.184 PJ of energy. Put this together, and you would need at ...
Extrasolar rocky planets are planets that orbit stars other than our Sun and are characterized by being temperate and composed of rock. AI generated definition based on: Interstellar Travel, 2023 About this pageSet alert Discover other topics ...
aThis Agreement may be executed in multiple counterparts, any one of which need not contain the signature of more than one party, but all such counterparts taken together shall constitute one and the same instrument. 这个协议在多个相对物也许被执行,任何其中之一不需要包含超过一个党署名,但是一起被...
We are subtly reminded of the naked eye planets, together with the Sun and the Moon, in our names of the days of the week. Saturday, Sunday and Monday are evidently named after Saturn, the Sun and the Moon respectively; they are Old English adaptations of the Roman names Saturnus, Sol ...
Their discovery defies a long-held concept known as "core accretion" which explains how giant gas planets such as Jupiter and Saturn came into existence. That theory is that the planets were created near "host" stars when dust grains clumped together into successively bigger grains, then pebbles...
^ Back to Top of PageThe Days of the WeekWe are subtly reminded of the naked eye planets, together with the Sun and the Moon, in our names of the days of the week. Saturday, Sunday and Monday are evidently named after Saturn, the Sun and the Moon respectively; they are Old English...
Let us suppose that both hands start together from XII, then in 224.70156 days the long hand is round to XII again, but the short hand will have only advanced to about VII, and by the time it reaches XII the long hand will have completed a large part of a second circuit. It happens...
In the late stages of terrestrial planet formation, pairwise collisions between planetary-sized bodies act as the fundamental agent of planet growth. These collisions can lead to either growth or disruption of the bodies involved and are largely responsi