Astronomy and Astrophysics – Astronomy
Scientist
Astronomy and Astrophysics
Astronomy
Scientist
"Der Komet" - Bausteine für elementare Himmelskunde an Schulen.
Bedingungen der Himmelsbeobachtung mit Auge und Fernglas.
Beobachtungen von Kometen.
Brennweiten in der Astrofotografie.
Carl Sagan (1934 - 1996).
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