Dark Matter and Dark Energy: The Critical Questions.

Turner, M. S.

Technical Information Center Oak Ridge Tennessee

关键词: Universe;    Neutrinos;    Baryons;    Constituents;    Dark energy;   

RP-ID  :  DE2003804699

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Stars account for only about 0.5% of the content of the Universe; the bulk of the Universe is optically dark. The dark side of the Universe is comprised of: at least 0.1% light neutrinos; 3:5% plus or minus 1% baryons; 29% plus or minus 4% cold dark matter; and 66% plus or minus 6% dark energy. Now that we have characterized the dark side of the Universe, the challenge is to understand it. The critical questions are: (1) What form do the dark baryons take; (2) What is (are) the constituent(s) of the cold dark matter; (3) What is the nature of the mysterious dark energy that is causing the Universe to speed up.