I was searching through a Mercury map from the old Messenger mission and found something that really struck me. It was a square structure on the inside of a crater. It was actually attached and built into the crater. This looks like an alien structure to me. The small square area has four perfect 90 degrees angles...just as any square building might have. This is not a small structure. Its about 1.5km across by 1.5km. Not sure how anyone at NASA could have missed it. This thing really stands out. This is 100% proof that aliens are living on Mercury right now.