Grimes has recently revealed in a cover interview with Vanity Fair that she and the billionaire SpaceX founder, Elon Musk secretly welcomed a second child through a surrogate in December. The singer has also opened up about the origins of her unique name.
However, Elon Musk and Grimes were inspired by supercomputing, dark matter, and ‘deep space time’ when choosing their one-of-a-kind moniker for their newborn daughter Exa Dark Sideræl, whom they are calling ‘Y’ for short. And according to Grimes, the baby girl’s three names are all rooted in science, with one nod to the singer’s love of Lord of the Rings and elven mythology.
Grimes explained their newborn’s quirky first name, Exa, is a reference to the supercomputing term exaFLOPS, the capability of performing one quintillion floating-point operations per second. Meanwhile, Elon Musk and Grimes daughter’s second name, Dark, is a nod to dark matter and ‘the unknown.’ “People fear it but truly it’s the absence of photons. Dark matter is the beautiful mystery of our universe,” Grimes told the magazine.
Finally, Sideræl, which is pronounced sigh-deer-ee-el, is a ‘more elven spelling’ of sidereal, which Grimes described as “the true time of the universe, star time, deep space-time, not our relative earth time.” However, their daughter’s third name is also a reference to Grimes’ favorite Lord of the Rings character, the elf Galadriel, who ‘chooses to abdicate the ring.’
Grimes admitted to Vanity Fair that their unique choice of names is not to everyone’s tastes, admitting that she is prepared for her daughter to one day want to change it. She added that they might end up changing the name themselves before the interview came out. The mom then explained that Exa Dark Sideræl was a compromise, but she thinks it might be boring. “I was fighting for Odysseus Musk,” she told the magazine. “A girl named Odysseus is my dream.”