History of Space Exploration: Chapter 9, Exercise 1 — Possible Solution ====================================================================== Sojourner | 1997 | contact lost 27 September 1997 | just over 100 m Spirit | 2004 | last contact 22 March 2010 | 7.73 km, wheels trapped in sand Opportunity | 2004 | last status 10 June 2018 | 45.16 km Curiosity | 2012 | operational as of September 2026 | (as-of date) Perseverance | 2021 | operational as of September 2026 | carried Ingenuity (as-of date) Zhurong | 2021 | deactivated 20 May 2022 (approx. end) | 1,921 m The "as of September 2026" entries are the source's statement on the day it was written, not a fixed end.