NASA spacecraft completes 50,000 Mars' orbits mapping it 99%
NASA's Mars Reconnaissance Orbiter recently completed 50,000 orbits of Mars since beginning its operations in 2006. The orbiter has imaged 99.1% of Martian surface with a resolution of about 6 metres per pixel using its Context Camera. The spacecraft has taken about 90,000 images of the red planet so far and remains functional after 11.5 years in spaceflight, NASA said.