The Mars Express Spacecraft Is Finally Getting a Windows 98 Upgrade

Engineers at the European Space Agency (ESA) are getting ready for a Windows 98 upgrade on an orbiter circling Mars. The Verge reports: The Mars Express spacecraft has been operating for more than 19 years, and the Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) instrument onboard has been using software built using Windows 98. Thankfully for humanity and the Red Planet’s sake, the ESA isn’t upgrading its systems to Windows ME. The MARSIS instrument on ESA’s Mars Express was key to the discovery of a huge underground aquifer of liquid water on the Red Planet in 2018. This major new software upgrade “will allow it to see beneath the surfaces of Mars and its moon Phobos in more detail than ever before,” according to the ESA. The agency originally launched the Mars Express into space in 2003 as its first mission to the Red Planet, and it has spent nearly two decades exploring the planet’s surface.

MARSIS uses low-frequency radio waves that bounce off the surface of Mars to search for water and study the Red Planet’s atmosphere. The instrument’s 130-foot antenna is capable of searching around three miles below the surface of Mars, and the software upgrades will enhance the signal reception and onboard data processing to improve the quality of data that’s sent back to Earth. “We faced a number of challenges to improve the performance of MARSIS,” explains Carlo Nenna, a software engineer at Enginium who is helping ESA with the upgrade. “Not least because the MARSIS software was originally designed over 20 years ago, using a development environment based on Microsoft Windows 98!”

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