STAMPS

2.1 Personalities of the astronomy

HIPPARCH VON NIKÄA (190 - 120 BC)

· greek Astronomer

· calculated the length of the year und of the seasons

· discovered the precession of the earth

· calculated the distance earth - moon

· invented the Astrolabium = Measure for watching stars

· created a stars catalog

NIKOLAUS KOPERNIKUS ( 1473 - 1543 )

· german Astronomer

· Founder of the heliozentric world view

· Author of the act "De revolutionibus orbium coelestum libri VI"

GALILEO GALILEI ( 1564 - 1642 )

JOHANNES KEPLER ( 1571 - 1630 )

ADAM SCHALL ( 1592 - 1666 )

· german missionary and astronomer

OTTO VON GUERICKE ( 1602 - 1686 )

· german physicist

FRIEDRICH WILHELM BESSEL ( 1784 - 1846 )

· german astronomer ans mathematician

· provided the first exact localisation of stars

· calculated the extent of the earth ellepsoid

· measured 1838 for the first time the parallax (distance) of a star (61 Cygni)

2.2 Calendar

2.3 Sun

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2.4 Moon

2.5 Solar System/Planets

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2.6 Comets

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2.7 Constellations

2.8 Galaxies/Nebulas

2.9 Gamma-Ray-Astronomy

2.10 Astronomic Instruments

2.11 Planetaria

2.12 Earth- und Skyglobes