A series of missions in the European Space Agency's Horizon 2000 programme. This includes the Rosetta mission launched on 2 March 2004 to land on a comet in 2014.
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。