August 15, 2022

The name pays homage to a Lord of The Rings character

Elon Musk and Grimes have revealed that they secretly welcomed a second child months after their very public breakup back in September.

During Grimes’ Vanity Fair cover shoot, the singer was forced to reveal all after her daughter began crying from upstairs. Naturally, the reporter questioned the noises, to which Grimes, 33, replied: “She’s a little colicky too.”

“I don’t know. I don’t know what I was thinking,” she told the magazine of trying to hide the baby.

At first, Grimes only revealed that they refer to her as “Y”, which seems fitting given that they refer to her older brother as “X.” Just in case you needed reminding, his full name is X Æ A-Xii.

Via text message, Grimes confirmed the full name: “is Exa Dark Sideræl Musk.”

Exa is a reference to the supercomputing term, while dark is “the unknown. People fear it but truly it’s the absence of photons. Dark matter is the beautiful mystery of our universe.”

Sideræl, pronounced “sigh-deer-ee-el”, is “a more elven” spelling of sidereal, described as “the true time of the universe, star time, deep space time, not our relative earth time.” She also told Vanity Fair that it’s a gentle nod to her favourite Lord Of The Rings character, Galadriel.

The couple previously drew attention after their unique name choice for their firstborn/Via Getty

Grimes revealed that Y was born via surrogate back in December, just three months after she and Elon Musk, 50, called it quits on their three-year relationship.

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On their relationship, Grimes said: “I would probably refer to him as my boyfriend, but we’re very fluid. We live in separate houses. We’re best friends. We see each other all the time…. We just have our own thing going on, and I don’t expect other people to understand it.”

“This is the best it’s ever been,” she added. “We just need to be free.”

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