The space between the Earth and Moon. Apollo astronauts in the 1960s noted that cislunar space gave the lunar day an impression of ‘day-night’, with a sunlit lunar surface contrasted against a black sky.
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。