Here, the USSR appears to be rapidly sending out Mars orbiters in
an attempt to be ahead of the continuing space race. They have very
little success at this point in time however, and none of their orbiters
manage to properly make it to Mars. The US does not have any Mars
missions during this time period, and yet their first missions will still be
more successful than these 5 first Mars exploration attempts. (oct 10, 1960 – nov 4, 1962)