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vanessavz vanessavz
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A month ago

Why did ancient astronomers believe that the Earth did not move?



because they could not detect parallax



because they believed in circular motion



because all observable planets follow retrograde motion



because parallax is only detectable during the day

Textbook 
ASTRO

ASTRO


Edition: 3rd
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mattloftergenermattloftergener
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A month ago
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vanessavz Author
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A month ago
Good timing, thanks!
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Yesterday
Smart ... Thanks!
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2 hours ago
Thanks for your help!!
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