Mali issued two minisheets each containing two stamps on 2006/10/04. One minisheet shows the astronomer Cassini and the Huygens/Cassini probe. The other shows the a different view of the astronomer Cassini and the Huygens probe entering Saturn's atmosphere.
On 2006 October 4 Mali issued six minisheets, each with two stamps, featuring a number of subjects including Galileo Galilei, Giolanni Cassini, Christiaan Huygens, Edmond Halley and various spacecraft
This stamp shows Halley's comet