奇怪
发表于 2025-3-25 07:09:40
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ungainly
发表于 2025-3-25 08:13:45
Introduction, lifetime of millions to billions of years. Whichever of these objects is formed at the end of the life of a particular luminous star, the compact object will live in many respects unchanged from the state in which it was formed. Neutron stars themselves can take several forms—hyperon, hybrid, or st
刚开始
发表于 2025-3-25 11:53:47
Special Relativity,stated in the narrow terms of reference frames in uniform motion, referred to as inertial frames, implies the existence of an absolute space relative to which they move. The notion of the absoluteness of time goes back to time immemorial. A . transformation assumes the absoluteness of both space and
pulmonary
发表于 2025-3-25 17:58:39
General Relativity,that traces the evolution of the universe from its first intensely hot and dense beginning to its possible futures.. General Relativity is also the foundation for our understanding of compact stars. Neutron stars and black holes Can be understood correctly only in General Relativity as formulated by
disrupt
发表于 2025-3-25 21:16:25
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BLAZE
发表于 2025-3-26 00:18:14
Cosmology,many respects verifiable, theory of that evolution can be traced. There are a number of good books on the subject. The purpose here is to give a brief overview of cosmology. Einstein, himself, used his theory in this connection. But the time was before Edwin Hubble’s amazing discoveries about our un
committed
发表于 2025-3-26 06:19:50
Special Relativity,te of motion. However, in contrast to Galileo’s principle, Einstein made the important distinction between reference frames that simply are in uniform motion, and those that are in uniform motion . This distinction makes all the difference in the world.
品尝你的人
发表于 2025-3-26 09:19:38
Compact Stars: From Dwarfs to Black Holes,. is involved in forming a star from this diffuse gas. Stars more massive than a few M. are observed to form in small groups in the densest regions of the clouds. The motion of a given star often suggests the gravitational influence of several nearby stars. About half of all stars are in binaries.
突变
发表于 2025-3-26 14:57:16
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包租车船
发表于 2025-3-26 20:52:57
Cosmology,iverse—its expansion with distant galaxies receding in proportion to their distance from us, and very importantly, that on the large-scale, the universe is homogeneous and isotropic. These observations make it clear that we are not at the center of the universe; rather, the universe is expanding ..