![Spirit Facts](https://webarchive.library.unt.edu/eot2008/20080917212933im_/http://solarsystem.nasa.gov/missions/images/miss-mer_a-facts.gif)
Spirit traveled about 500 million kilometers (311 million miles) on its journey to Mars.
A day - or sol - on Mars is 24 hours, 39 min, 35 sec (1.027 Earth days). Spirit is expected to operate for at least 91 sols on Mars.
Spirit carried a memorial (above) to the crew of the Space Shuttle Columbia to the surface of Mars.