(Reuters) – Elon Musk on Friday night broke his nine-day silence on Twitter, the social media platform he is trying to buy for $44 billion, posting a picture of him meeting Pope Francis on Thursday. The world’s richest person tweeted a picture where he can be seen standing next to the pope, captioning it: “Honored to meet @pontifex yesterday.” Musk’s four teenage boys are also pictured, but not his 18-year-old transgender daughter who, on June 20 sought to change her name and sever ties with him. Musk has a total of eight children. The purpose and location of Musk’s meeting with the pope were …