MISSION · National Aeronautics and Space Administration (NASA)
Mariner 9
NASA’s Mariner 9 was the first spacecraft to orbit another planet, mapping Mars and transforming our view of its volcanic and canyon landscapes.
Datum30 May 1971 – 27 October 1972
AgenturaNational Aeronautics and Space Administration (NASA)
MiseMariner 9
SEE ALSO →Mariner 9
◉ REÁLNÉ FOTO · NASA / images.nasa.govFig. 1 — Mariner 9 Arsia Silva
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updated · 13 Jul 2026#NASA#Mariner#Mars
Mariner 9 became the first spacecraft to orbit another planet when it arrived at Mars in November 1971. It mapped almost the entire surface and returned more than 7,000 images despite a planet-wide dust storm.
MISSION TIMELINE
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1
Launch toward Mars
Mariner 9 launched toward Mars.
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2
Mars orbit and dust storm
Mariner 9 entered orbit as dust hid the surface.
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3
A new Mars revealed
The spacecraft mapped volcanoes, valleys and polar regions.
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4
Mission legacy
Mariner 9 ended an extraordinary mapping campaign.
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FACTS
- First spacecraft to orbit another planet.
- Mapped about 85 percent of Mars.
- Returned more than 7,000 images.
- Worked through a planet-wide dust storm.
GALERIE
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◉ NASA photography — public domain✦ AI illustration — marked, generated from sourcesarticle text — CC-BY-SA
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