Now this is interesting... a 8-10 million years old hot Jupiter around the low-mass star TW Hydrae (Space.com article). The system is so young that the protoplanetary disk has not yet evaporated. Youngest planetary system by the factor of over 10.

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Science is a way of trying not to fool yourself. The first principle is that you must not fool yourself, and you are the easiest person to fool.
-- Richard Feynman