What is the proposed source for mysterious light flashes sometimes detected *originating* from Venus itself via orbital observations?

Answer

The visible signature of meteors entering the Venusian atmosphere

Orbital observations suggest that light flashes emanating from Venus are likely caused by interplanetary dust and small meteoroids vaporizing upon impact with the planet's dense upper atmosphere.

What is the proposed source for mysterious light flashes sometimes detected *originating* from Venus itself via orbital observations?

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