Elon Musk doesn’t just consider having kids to be an honor — he also sees it as a duty. The billionaire business tycoon, who is the founder and CEO of SpaceX and Tesla Inc., is also dad to seven sons and one daughter. He’s had kids with two different women through natural birth, IVF, and surrogacy. This unique family (and some of the kids’ hard-to-pronounce names!) is broken down for you, below.
Musk was named TIME’s 2021 Person of the Year and is estimated to be the richest man in the world with a net worth of over $245 billion, according to Forbes. He recently made waves when he negotiated a buyout deal with Twitter for $44 billion. But perhaps one of his most interesting takes is when he told Wall Street Journal in December 2021 that he believes in the importance of having kids.
“The foundation of the economy is labor,” he said. “The fundamental constraint is labor. There are not enough people. I can’t emphasize this enough, there are not enough people. And I think one of the biggest risks to civilization is the low birth rate and the rapidly declining birth rate.”
Musk went on to say that some people think the population is “growing out of control,” but he believes “it’s completely the opposite.” He added. “If people don’t have more children, civilization is going to crumble. Mark my words.”
In his personal life, Musk told the Wall Street Journal, “I’m trying to set a good example.” He’s welcomed six kids with wife Justine Musk (formerly Wilson), who is a Canadian author, and two kids with ex-wife (and current girlfriend) Claire “Grimes” Boucher, who is a Canadian pop star.
In a March 2022 cover story for Vanity Fair, Grimes said, “There’s no real word for it,” when describing her relationship with Musk. “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.”
She added that they are happy and are planning on having more kids. “We’ve always wanted at least three or four.”
Currently, Musk is a father to eight children and here’s a look at what he’s shared about them.
Nevada Alexander was born in May 2002 to Musk and his ex-wife, Justine. He died at 10 weeks old due to sudden infant death syndrome (SIDS). In an essay for Marie Claire in 2010, Justine wrote, “Nevada went down for a nap, placed on his back as always, and stopped breathing. He was 10 weeks old, the age when male infants are most susceptible to SIDS (Sudden Infant Death Syndrome).” The Sleep Foundation says the risk for SIDS peaks between one and four months.
Justine said paramedics resuscitated him, but “he had been deprived of oxygen for so long that he was brain-dead.” Justine added, “He spent three days on life support in a hospital in Orange County before we made the decision to take him off it. I held him in my arms when he died.”
In a 2018 email to James Riley, the father of 18-year-old Barrett Riley, who died in a Tesla car crash, Musk said, “There’s nothing worse than losing a child.” According to Bloomberg, Musk later wrote: “My firstborn son died in my arms. I felt his last heartbeat.”
Xavier and Griffin
Twins Xavier and Griffin, 18, were born to Musk and Justine less than two years after Nevada died. In her essay for Marie Claire, Justine said the two were conceived via in-vitro fertilization (IVF).
Damian, Saxon, and Kai
Damian, Saxon, and Kai, 16, are the triplet sons of Musk and Wilson, also conceived via IVF. In a 2017 TedTalk, Justine told the audience, “So, I have five kids. Twins and triplets. All boys,” she said, while laughing. “No multiples do not run in my family, and, yes, it was IVF, so let’s just get that on the table.”
In the same talk, she shared some of the typical mom things she often says, including “Please, take the lightsabers off the dinner table,” “You know, I would prefer it if you did not eat your brother’s head,” and “No, the dog is not a rocket, so you do not have permission to launch him.” Those directives are all-too-relatable…
— Elon Musk (@elonmusk) May 5, 2020
X Æ A-Xii
In 2020, X Æ A-Xii (formerly X Æ A-12) was born to Musk and Grimes. On Twitter, Grimes broke down what this unique name means. She said X is “the unknown variable,” Æ is “my elven spelling of Ai (love &/or Artificial intelligence),” A-12 is “precursor to SR-17 (our favorite aircraft). No weapons, no defenses, just speed. Great in battle, but non-violent,” and A means “Archangel, my favorite song” with the number “12” representing the rat in the Chinese zodiac.
•X, the unknown variable ⚔️
•Æ, my elven spelling of Ai (love &/or Artificial intelligence)
•A-12 = precursor to SR-17 (our favorite aircraft). No weapons, no defenses, just speed. Great in battle, but non-violent 🤍
(A=Archangel, my favorite song)
(⚔️🐁 metal rat)
— 𝔊𝔯𝔦𝔪𝔢𝔰 (⌛️,⏳) ᚷᚱᛁᛗᛖᛋ (@Grimezsz) May 6, 2020
Exa Dark Sideræl
In the Vanity Fair cover story, Grimes revealed that she and Musk used a surrogate to have Exa Dark Sideræl in 2021, a daughter whose name they pronounce as “Y.”
Exa references “the supercomputing term exaFLOPS (the ability to perform 1 quintillion floating-point operations per second),” according to Vanity Fair. Dark, meanwhile, is “the unknown. People fear it but truly it’s the absence of photons. Dark matter is the beautiful mystery of our universe,” Grimes said.
It is pronounced “sigh-deer-ee-el,” which is an elven spelling of sidereal, “the true time of the universe, star time, deep space time, not our relative earth time.” It also references Galadriel from Lord of the Rings, who “chooses to abdicate the ring.”
Grimes and Musk also sometimes call their daughter, Sailor Mars, in reference to the manga series, Sailor Moon. They have not publicly shared any photos of Y yet.