Austria 1953 – Johannes Kepler
Johannes Kepler (1571–1630) was a
German mathematician and astronomer whose three laws of
planetary motion, based on the observations of Tycho Brahe and
published in 1609 and 1619, established our modern view of the
Solar System. Kepler’s laws stated that the planets orbit
the Sun on elliptical paths, moving faster when closer to the
Sun and slower when farther away, and that there is a simple
mathematical relationship between their distances and orbital
periods. He also observed and described the supernova of 1604
in Ophiuchus, now commonly known as Kepler’s Star, and
wrote a book about optics and the theory of the telescope.
This stamp was issued as part of a set
devoted to the Vienna Evangelical School Rebuilding Fund.
Kepler was throughout his life a devout Christian and he taught
for two periods in Austria, first in Graz and later in Linz.
(Note: Although the Gibbons catalogue
describes the colour of this stamp as “blue”, it
looks more like a dark slate.)
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