RT @CosmicKaufman: @mikeobrienastro Hi Mike: Here are some links. They're science textbooks rather than observing guides. We'll be releasin…
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3,401 followers
RT @CeuProfundo: Fundamental Astronomy. (2016, Hannu Karttunen, Pekka Kröger, Heikki Oja, Markku Poutanen, Karl Johan Donner) https://t.co/…
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Fundamental Astronomy. (2016, Hannu Karttunen, Pekka Kröger, Heikki Oja, Markku Poutanen, Karl Johan Donner) https://t.co/KT3KD2Nvm7 https://t.co/Ax92uqtgW0
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RT @rgmachado: 3/7 Fundamental Astronomy - Hannu Karttunen, Pekka Kröger, Heikki Oja, Markku Poutanen, Karl Johan Donner https://t.co/TCmxp…