viking 1 was sent in outer space is to study planet from surfaces.. it was sent and landed at Mars and studied the surface of the planet... :)
Saturn
the megellan space probe was sent to venus.
The Mariner10 space probe and the Mercury Messenger space probe.
To orbit the planet Venus
The probe "Venera 7" sent by the USSR was the first. It landed on the planet Venus, in 1970 I think.
Yes. It is correct to say that viking was a name of a lunar probe.
Nothing! Just ice (boring planet).
First ever satellite to land on the planet Mars was a Russian probe called Mars 2. Albeit it did not land but crashed. The first successful probe to land on Mars was Mars 3 sent by the Russians, however the probe was operational for 15 minutes after landing on Mars. The first American probe to land on Mars was the Viking 1 on the 20th of July 1976.
In 1967, the USSR sent Venera 4 into space to probe the planet Venus. This was followed by Venera 5 in 1969 and Venera 6 in 1969. The US sent the Pioneer Venus 2 to probe Venus in 1978.
if you mean CASSINI, then it was Saturn.
The Viking program sent two space probes to the planet Mars in 1976. It was a very expensive mission, costing approximately 1 billion dollars.