Mars Probe Running OS Developed in Windows 98 Receives

The latest, but probably not the last, tale of old software running in mission-critical operations comes to us via the Twitter feed of guitar-playing Canadian astronaut Chris Hadfield. The European Space Agency’s Mars Express probe, currently in orbit around the Red Planet and doing just fine, recently had a major software update to increase its chances of discovering water there. 

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Launched in 2003, the Mars Express, and its MARSIS (Mars Advanced Radar for Subsurface and Ionosphere Sounding) water probe, naturally had software developed using one of the major operating systems of the time — Windows 98.