7 Dez 1996 Jahr - Mars Global Surveyor
Beschreibung:
Mars Global Surveyor entered orbit on September 12, 1997. After a year and a half trimming its orbit from a looping ellipse to a circular track around the planet, the spacecraft began its primary mapping mission in March 1999. It observed the planet from a low-altitude, nearly polar orbit over the course of one complete Martian year, the equivalent of nearly two Earth years.
Zugefügt zum Band der Zeit:
Spacecraft on Mars
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