The Comoran flag depicts stars and a crescent, which is likely rooted in the mythology of the region. Thus, any stamps sitewide depicting the Comoran flag are included as topical matches.
Nicolaus Copernicus / Launch Albert Einstein / Carl Sagan / Thomas Young Probe in Orbit Norse Exploration of America Landing on Mars Insignia / Martian Landscape American Pioneer / Launch (gold foil) Probe (souvenir sheet) Probe on Mars (souvenir sheet)(gold foil)
25 November 1976 - Quadranscentennial of the United Nations Postal Administration
UN #24 / Farming UN #43 / Medical Personnel UN #162 / Mother & Child UN #42 / Satellite UN #32 / Concorde / Zeppelin UN #18 / Cargo Plane Letters Around the World
30 December 1976 - American Bicentennial
Fort Sumter Bull Run Antietam Gettysburg Chattanooga Appomattox John F. Kennedy / Lunar Module (gold foil) Surrender at Appomattox (souvenir sheet) Abraham Lincoln / Battlefield (souvenir sheet)(gold foil)
Jupiter Probe Voyager / Uranus Pioneer / Venus Space Shuttle Viking / Mars Apollo-Soyuz Test Project Symbolic Sun / Space Shuttle / Space Probes / Constellations (souvenir sheet)
Galileo Galilei / Voyager 1 Johannes Kepler / Voyager 2 Nicolaus Copernicus / Voyager 1 Christiaan Huygens / Voyager 2 William Herschel / Voyager 2 Urbain Le Verrier / Voyager 2 Voyager 1 / 2 (souvenir sheet)
30 May 1979 - International Year of the Child
Logo / Apollo Moonwalker / Child in Costume Logo / Bobsledder / Child with Snowboard Logo / Painting / Child Painting Logo / Steam Locomotive / Child with Toy Train Logo / Adult Soccer Players / Children Playing Soccer Logo / Olympic Rowers / Child in Rowboat Logo / Karl Benz / Child in Toy Car (souvenir sheet of 1) Logo / Louis Blériot / Child with Radio-controlled Plane (gold foil)
15 September 1979 - République Fedérale et Islamique des Comores Overprints
Yuri Gagarin Henry Dunant Roger Clemens Garry Kasparov Paul Harris souvenir sheet of 5 Rotary International (gold foil) Neil Armstrong / John F. Kennedy (souvenir sheet) Auguste Rodin’s The Thinker / Rotary International Insignia (souvenir sheet) (gold foil)
10 April 1989 - 1988 Seoul Summer Olympic Games Equestrian Teams
Aussat K3 / West Germany Brazilsat / France European Communications Satellite 4 / Hungary Olympus / New Zealand France (gold foil) Satellite / West Germany (souvenir sheet) West Germany (souvenir sheet)(gold foil)
26 November 1990 - Events
Hubble Space Telescope Pope John Paul II / Mikhail Gorbachev Kevin Mitchell Wins NL MVP Charles de Gaulle / Konrad Adenauer Cassini Probe TGV / Concorde Garry Kasparov Becomes World Chess Champion Paul Harris
Columbus Satellite Mohandas Gandhi Henry Dunant Wolfgang Amadeus Mozart Brandenberg Gate Konrad Adenauer Elvis Presley souvenir sheet of 6 Fredinand von Zeppelin souvenir sheet of 1
Ham the Chimpanzee Mars Observer Felix the Space Cat Mars Rovers Phobos Probe souvenir sheet of 3 (#s 784, 786-7) Laika souvenir sheet of 3 (#s 783, 785, 788) Viking Probe (souvenir sheet)
28 May 1992 - Voyages of Discovery
Shuttle Endeavour / James Cook Satellite / Francis Drake Infrared Space Observatory / John Smith Gravity Probe B / Robert F. Scott Magellan / Ferdinand Magellan XMM-Newton / Vasco da Gama souvenir sheet of 6 Hermes / Columbus (souvenir sheet)
17 May 1993 - World Telecommunication Day
International Telecommunication Union Insignia 50fr International Telecommunication Union Insignia 75fr International Telecommunication Union Insignia 100fr International Telecommunication Union Insignia 150fr
circa 1998 - Meteorites
sheet of 9 Martian Antarctic Chrondite Archrondite Octahedrite Iron Tektite Chrondrite Olivine Iron
circa 1999 - Space Achievements
sheet of 3 Shuttle Discovery / Buran Ariane V John Glenn / Saturn V sheet of 3 Valentina Tereshkova Laika / Bielka Yuri Gagarin Shuttle Discovery / John Glenn (souvenir sheet of 1)
1 October 2008 - Conquest of Mars
sheet of 6 Spirit Mars Polar Lander Viking Mars Climate Observer Phoenix Sojourner Mariner 3 (souvenir sheet of 1)
7 January 2009 - Astronauts
sheet of 6 Yuri Gagarin / Vostok 1 Neil Armstrong / Apollo 11 Alan Shepard / Apollo 14 / Hubble Space Telescope Valentina Tereshkova / Vostok 6 Pavel Popovich / Soyuz 14 John Glenn / Friendship 7 Yang Liweh / Shenzhou 5 (souvenir sheet of 1) (L. Gordon Cooper / Mercury Spacecraft in margin)
1 July 2009 - Celebrities
Chinese Celebrities (sheet of 6) Zhai Zhigang Yo-yo Ma Lucy Liu Mohandas Gandhi Yao Ming Tania Sachdev George Clooney / Benjamin Franklin (souvenir sheet of 1) (Shuttle launch in margin) Hidetoshi Nakata / Eiji Toyoda (souvenir sheet of 1) (satellite in margin)