a space mission is a journey made by a manned or unmanned vehicle into space for a specific reason.

A space probe is an unmanned spacecraft sent into space.

== == The Cassini space orbiter was part of the Cassini-Huygens mission, a collaborative NASA/ESA/ASI unmanned space mission for the purpose of studying Saturn and its moons.

It is a unmanned mission

There were a total of 19 Apollo missions:

Apollo-1A : Unmanned suborbital flight

Apollo - 2 : Unmanned orbital flight

Apollo - 3 : Unmanned suborbital flight

Apollo - 1 : Manned orbital mission, cancelled due to fatal accident.

Apollo - 4 : Unmanned orbital flight

Apollo - 5 : Unmanned orbital flight

Apollo - 6 : Unmanned orbital fligth

Apollo - 7 : Manned orbital mission

Apollo - 8 : Manned lunar orbit mission

Apollo - 9 : Manned orbital mission

Apollo -10 : Manned lunar orbit mission

Apollo- 11 : Lunar Landing mission

Apollo- 12 : Lunar Landing mission

Apollo- 13 : Lunar Landing mission, aborted due to accident

Apollo- 14 : Lunar Landing mission

Apollo- 15 : Lunar Landing mission

Apollo- 16 : Lunar Landing mission

Apollo- 17 : Lunar Landing mission

Apollo -18 : Space rendevous mission with Soviet Soyuz spacecraft (Apollo-Soyuz)