How often are satellite images taken? Those that are more periodic, why they don't have much resolution?

alexandre9099
2018-08-08T18:34:19Z

Hi,

How often are satellite images taken? Why are more periodic images takes with less resolution (is it a different process?)

for example https://zoom.earth takes every 12 hours, but on the most frequent ones i am not able to zoom much (before it switch to older ones)

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