The 300-year-old mystery of why Venus causes the ‘Black Drop Effect’

Venus, transit of Venus, black drop effect, Mrs Morgan's Florilegium

We can see Venus pass in front of the sun once every one hundred and twenty years. Ever since it’s been observed, a strange thing has been happening. Instead of appearing as a dark circle moving across the sun, Venus formed a tear drop shape that slowly oozed onto the solar disc. It took three hundred years for scientists to understand the Black Drop Effect.

Read the full article here.

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