Today marks the 2,000th Martian day, or sol, of what was initially planned as a 90-sol mission on Mars for NASA's Spirit rover.
Spirit's twin, Opportunity, will reach the 2,000-sol milestone on Sept. 8. Both rovers have found rocks altered by past action of water on Mars. Both show some signs of aging but remain capable of further scientific investigations.
Since their landing halfway around the planet from each other in January 2004, Spirit has driven 4.8 miles and Opportunity has driven 10.7 miles. Together, they have returned more than 246,000 images. Each Martian sol lasts about 40 minutes longer than an Earth day.
Europe and Russia sign Mars exploration deal
MOSCOW (AFP) The European Space Agency (ESA) on Wednesday signed a deal with its Russian counterpart Roscosmos to cooperate on two Mars exploration projects, Russia's Interfax news agency reported.
The deal was inked by Roscosmos head Anatoli Perminov and the ESA's Jean-Jacques Dordain at the Maks aviation and space show outside Moscow, Interfax quoted an unnamed Roscosmos spokesman as saying.
Under the deal, the ESA will use Russia's Proton rocket as part of its Exomars project to send a robotic rover to the Mars surface and buy Russian parts for the rover's power supply system.
The deal will also see Russia's Phobos-Grunt project – to send a probe to Mars' Phobos moon in October 2009 – use the ESA's terrestrial communication facilities during its mission.
ESA comprises 16 members of the European Union (EU) plus Norway and Switzerland. Canada takes part in some of its projects under a cooperation agreement.
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