Heikki Oja

Heikki Oja (born 20 May 1945 in Helsinki, Finland) is a Finnish docent of astronomy, Doctor of Philosophy and the former director of the almanac office of the University of Helsinki. Provided by Wikipedia
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Published 2017
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Published 2007
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Astronomy Astronomy, Astrophysics and Cosmology Astrophysics Geophysics Geophysics/Geodesy Popular Science in Astronomy Astronomy, Observations and Techniques Astronomy—Observations Astrophysics and Astroparticles Observations, Astronomical Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) Space sciences