// todo need optimize like in event.jsp. Add indexing or not indexing this page. The failures of the USSR's Mars 4-7 marked the USSR's last attempts in the 70s and early 80s to send spacecraft to Mars. Viking 1 and Viking 2 were sent by the US to gather images of Mars, with great success. Because they operated for such a long time, US will also not send anymore spacecraft to Mars until the 90s. (9 abr 1975 ano – 9 abr 1988 ano) (Linha do tempo)
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The failures of the USSR's Mars 4-7 marked the USSR's last attempts in the 70s and early 80s to send spacecraft to Mars. Viking 1 and Viking 2 were sent by the US to gather images of Mars, with great success. Because they operated for such a long time, US will also not send anymore spacecraft to Mars until the 90s. (9 abr 1975 ano – 9 abr 1988 ano)

Adicionado na linha do tempo:

Mars Launch Timeline

ByLogan Gorkov
29 jan 2018

Data:

9 abr 1975 ano
9 abr 1988 ano
~ 13 years
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