English version

Sagan, Carl

From Longman Dictionary of Contemporary EnglishSagan, CarlCarl SaganSa‧gan, Carl /ˈseɪɡən, kɑːl $ kɑːrl/  (1934–97) a US astronomer (=a scientist who studies the stars), who was especially interested in discovering whether there were living creatures in other parts of the universe. He made a popular series of television programmes about the universe, called Cosmos.
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