Elon Musk warmed his fans' hearts this weekend by tweeting a rare snap of his nine-month-old baby sonX Æ A-XII.The tech heartthrob, who is CEO of SpaceX and Tesla, shares his firstborn child with his girlfriend Grimes whose real name is Claire Elise Boucher.In his new snapshot Elon, 49, could be seen using one hand to chat on the phone and the other arm to hold his baby, who was tugging at his shirt. 'The Second Last Kingdom':Elon Musk warmed his fans' hearts this weekend by tweeting a rare snap of his nine-month-old baby son X Æ A-XIIElon, who last month passed up Jeff Bezos to become the richest man in the world, cryptically captioned the post: 'The Second Last Kingdom.'It is unknown whether he was making a joking reference to The Last.
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