20 December (Benin ) within release 30th Anniv. Of the death of Johannes Kepler goes into circulation Stamp 30th Anniv. Of the death of Johannes Kepler face value 60 West African CFA franc
Stamp 30th Anniv. Of the death of Johannes Kepler in catalogues | |
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Michel: | Mi: BJ 256 |
Yvert et Tellier: | Yt: BJ 521 |
Stamp is square format.
Also in the issue 30th Anniv. Of the death of Johannes Kepler:
Stamp 30th Anniv. Of the death of Johannes Kepler it reflects the thematic directions:
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either observational (by analyzing the data) or theoretical astronomy. Examples of topics or fields astronomers study include planetary science, solar astronomy, the origin or evolution of stars, or the formation of galaxies. A related but distinct subject is physical cosmology, which studies the Universe as a whole