Astronomy on Stamps - Astronomie auf Briefmarken - Astronomie sur les timbres

OK, so let's which are presented in philatelic object in a hierarchical way
click to show infos and options...

• you can Expand all or Collapse all
• use data of the astrothesaurus2, as defined here: http://www.astrothesaurus.org
• browse by name A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
• browse by keywords A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Action	ENTRY	#found	MEMO, Attributes and References
	Catalog		Selection of Astronomical Catalogues for object displayed on stamps List_of_astronomical_catalogues
	Events		Astronomical Events, e.g. eclipses, transits etc.
	Observation		Astronomical Observation, Telescopes, Observatories etc.
	People		Astronomers, People doing astronomical Research List_of_astronomers
	Research		Astronomical Research, Congresses, Institutes, Societies etc.
	Universe		All Astronomical Objects grouped by spatial relationships

INFO: use to expand by one level or to expand all below this level

Click here to show some info about the hierarchical basis...

• the used hierarchical structure of themes is resulting from a mainly practical approach how to classify stamps
• a more scientific approach as a general astrothesaurus can be found,at astrothesaurus.org, look HERE
• a very charming approach is the classification in only 3 topics as OBSERVABLES / OBSERVERS / OBSERVATION, look HERE
• any member of a hierarchical level is member of the element(s) above (e.g. Mars is member of Planet, Planet is member of SolarSystem etc.)
• .....