NASA’s Mars Reconnaissance Orbiter dips into the thin martian atmosphere to adjust its orbit in this artist’s concept illustration. – NASA/JPL/Corby Waste

Related channels: UAHiRISE (NASA MRO), PLANET MARSDEIMOS (MARS MOON), PHOBOS (MARS MOON), SPACE COLONIZATION, TERRAFORMING, EXOMARS, CURIOSITY (ROVER)SPIRIT (ROVER), OPPORTUNITY (ROVER)VENUS, THE SUN, THE SOLAR SYSTEM