SITUATION EXPLAINED: MidJourney is acquiring Co-Star. • Banu Guler, founder of the astrology app Co-Star, joined Midjourney as Chief Design Officer, leading design, product, and frontend across all of Midjourney's efforts, Co-Star itself keeps operating independently under her control • The deal closed this spring and is only being announced now, about two dozen Co-Star employees joined alongside her • Co-Star has 4.3 million monthly active users, per Bloomberg • Midjourney has never taken VC…