Quote:
Originally Posted by Tsan
Tonight I managed to get out for a look, before the weather rolls back in. Took a look at Jupiter and noticed a black spot on the planet. I could only see 3 moons, could the black spot have been a shadow on the planet from one of the moons?
Total newb question, but wanted to check with the brains trust to make sure it is what I think.
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Hi,
Io the innermost of the Galilean moons was in transit which was followed by its shadow, which is what you saw.
Cheers
John B