8 years into it, Opportunity still operating on Mars.
"A NASA rover celebrated eight years on the Martian surface Tuesday, and the long-lived robot is still going strong.
"The Opportunity roverlanded on the Red Planet at 9:05 p.m. PST Jan. 24, 2004 (12:05 a.m. EST Jan. 25), three weeks after its twin, Spirit, touched down. While NASA declared Spirit dead last year, Opportunity continues to gather data in its dotage, helping scientists understand more and more about Mars' wetter, warmer past."
http://www.msnbc.msn.com/id/46120217/ns/technology_and_science-space/#.Tx_CgKWLssI
What a hoot!!!