STAR:A huge ball of hot gas that makes heat and light 在天文学上,star指的是“恒星”。太阳系(solar system)只有一个star(恒星),会发光、发热,那就是太阳。 Planets(行星) 金星则是 planet(行星),不发光,也不发热,在轨道上环绕太阳运...
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Chiba, T., Smith, T.L., and Erickcek, A.L., "Solar System constraints to general f (R) grav- ity", Phys. Rev. D, 75, 124014, (2007). [DOI].Chiba T,Smith T L,Erickcek A L.Solar System constraints to general f (R) gravity. Physical Review D Particles Fields Gravitation ...
Explain the role of gravity in the solar system.相关知识点: 试题来源: 解析 Gravity is the force that attracts objects towards each other, and it plays a crucial role in keeping the planets in orbit around the sun and the moon around Earth....
Shortly after the addition of a 1/R term to the Einstein-Hilbert action was proposed as a solution to the cosmic-acceleration puzzle, Chiba showed that such a theory violates Solar System tests of gravity. A flurry of recent papers have called Chiba’s result into question. They argue that...
The solar system also has two analogous classes of objects, smaller than planets—namely, asteroids and comets.(太阳系也有两类类似的物体,比行星还小——即小行星和彗星。) That makes it the biggest known crater in our solar system and it may well be the oldest.(这使它成为太阳系中已知最大...
Our local neighborhood in space is called the solar system. At its heart is the Sun, an ordinary star that is so close it floods our planet with light. Trapped in its orbit by gravity are Earth and seven other planets, their many moons, and millions of comets and asteroids. ...
We investigate the solar-system constraint on the f(R) theory of modified gravity with chameleon mechanism, where f(R) represents the deviation from general relativity in the gravity action. We obtain a stringent bound to a general, non-constant deviation function f(R): -10^{-15} 3*10^5...
Long-Range Models of Modified Gravity and Their Agreement with Solar System and Double Pulsar Data 来自 钛学术 喜欢 0 阅读量: 28 作者: Lorenzo Iorio 摘要: The astronomer E.V. Pitjeva, by analyzing with the EPM2008 ephemerides a large number of planetary observations including also two ...
Scientists believe that diamonds would be much larger within Neptune and Uranus. Then they might slowly sink toward the planets center because of gravity. 答案 tiny 结果二 题目 (8分)Our solar system might be crazier than we once thought. Scientists say that deep within Uranus(天王星) and ...