Is entirely by robots.
13 missions, 1971-2012. Estimated mass: 9,303kg.
Entities on Mars
|
Artificial object
|
Nationality
|
Landed
|
Mass
|
Last Contact
|
| Mars 2 |
USSR
|
1971
|
1210kg
|
|
| Mars 3 |
USSR
|
1971
|
1210kg
|
|
| Mars 6 |
USSR
|
1973
|
635kg
|
|
| Viking 1 |
USA
|
1976
|
657kg
|
Nov 11, 1982
|
| Viking 2 |
USA
|
1976
|
657kg
|
Apr 11, 1980
|
| Mars Pathfinder & Sojourner |
USA
|
1997
|
360kg
|
Sep 27, 1997
|
| Mars Climate Orbiter |
USA
|
1999
|
629kg
|
|
| Mars Polar & Deep Space 2 |
USA
|
1999
|
500kg
|
|
| Beagle 2 |
UK
|
2003
|
33.2kg
|
|
| Spirit rover MER-A |
USA
|
2004
|
185kg
|
Mar 22, 2010
|
| Opportunity rover MER-B |
USA
|
2004
|
185kg
|
In operation
|
| Phoenix Mars |
USA
|
2008
|
350kg
|
Nov 2, 2008
|
| Mars Science Lab Curiosity |
USA
|
2012
|
900kg
|
In operation
|
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