| 5 27 • | | | | | | | 1972 | | | | | | | | | | | | | | | | 1990 | | | | | | | 1994 | 1999 | | | | | | | | | | | | | | 2005 Strathclyde | | | | | | | | | | | | 2013 | 2016 | | SCI 100 | | MIT TechReview | 2014 – 2016 Elsevier | | | | | | | | | | | | | | | | | | | | | | Astrodynamics | | Science China | | | | |