Comments on an Expanding Universe

[摘要] Various results are obtained for a Friedmann-Robertson-Walker cosmology. We derive an exact equation that determines Hubble's law, clarify issues concerning the speeds of faraway objects and uncover a 'tail-light angle effect' for distant luminous sources. The latter leads to a small, previously unnoticed correction to the parallax distance formula.

[发布日期] 2005-12-12 [发布机构] Lawrence Berkeley National Laboratory

[关键词] Universe;Astrophysics;Cosmology;72