A measure of the rate at which the recessional speed of galaxies varies with distance, calculated from Hubble’s law; H0 = 50−100 km/s/Mpc (megaparsec). This was formerly known as the Hubble constant.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。