Elon Musk, Grimes Welcome New Baby

Elon Musk is a dad for the sixth time. The Tesla founder's girlfriend, experimental pop star Grimes, gave birth to the couple's first child together on Monday, as Musk offhandedly announced via Twitter. "Mom & baby all good," he posted, giving no further details, though he later offered a one-word gender announcement revealing the baby is a boy. BuzzFeed notes that many on Twitter are joking about names the notoriously edgy couple might eventually choose. Sample: "The name of Grimes and Elon Musk’s baby is going to be exactly what dial-up internet sounds like." Musk has five kids with his ex-wife; this is Grimes' first child. (Read more Elon Musk stories.)