Malawi
Maldives
Mali
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
Marshall Islands
Mexico
Micronesia
Moldova
Mongolia
Nevis
Norway
This stamp shows Halley's comet
Palau