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Elon Musk has spent more than three decades doing what many investors and engineers once considered impossible. He helped popularise online payments before fintech became mainstream, pushed electric vehicles into the global automotive industry, turned reusable rockets from an ambitious experiment into commercial reality, and is now betting that artificial intelligence, autonomous robots and brain-computer interfaces will shape the next technological revolution.
As Musk celebrates his 55th birthday, he remains the
world’s richest person, according to Forbes, with an estimated net worth of US$839 billion. Much of that fortune stems from his holdings in Tesla and privately held SpaceX, alongside stakes in xAI and other ventures. Together, these companies span electric vehicles, commercial spaceflight, satellite internet, artificial intelligence, robotics, renewable energy and social media — forming one of the world’s most influential business empires.
From selling a video game as a child to building companies that are redefining multiple industries, here are the 55 milestones that shaped Musk’s extraordinary rise.
From Pretoria to Silicon Valley
Born in Pretoria, South Africa, on June 28, 1971, Musk developed an early fascination with computers. At the age of 12, he wrote and sold a space-themed video game called Blastar, offering the first glimpse of the entrepreneurial instinct that would later define his career.
In 1989, he moved to Canada to attend Queen’s University before transferring to the University of Pennsylvania, where he earned degrees in physics and economics. After graduating, Musk enrolled in a PhD programme at Stanford University in California but dropped out after just two days, convinced that the internet boom presented a once-in-a-generation business opportunity.
That decision would become the first major turning point in a career built on taking extraordinary risks.
Building the foundations
Musk’s first company, Zip2, developed online city guides and business directories for newspapers. When Compaq acquired the start-up in 1999 for more than US$300 million, the 28-year-old entrepreneur received around US$22 million for his stake.
Rather than cash out, he reinvested much of his fortune into X.com, an online banking start-up that aimed to digitise financial services long before fintech became a global buzzword.
X.com later merged with Confinity, the company behind PayPal. Although Musk was removed as chief executive following disagreements with fellow executives, he remained the company’s largest shareholder. When eBay acquired PayPal in 2002 for $1.5 billion, Musk received about $180 million — capital that financed his next, far more ambitious ventures.
Betting everything on space and electric cars
Few entrepreneurs would have invested nearly all their wealth into two industries notorious for destroying capital. Musk did exactly that.
In 2002, he founded SpaceX with the long-term ambition of making humanity a multi-planetary species. A year later, he became Tesla’s largest investor and chairman after the electric vehicle company was founded by Martin Eberhard and Marc Tarpenning. He later became chief executive and is legally recognised as one of Tesla’s co-founders.
Both companies came close to collapse during the 2008 financial crisis. SpaceX had suffered three consecutive rocket failures and Tesla was struggling to ramp up production. Musk later admitted that both companies were only weeks away from running out of cash.
A successful fourth Falcon 1 launch and a crucial NASA contract helped save SpaceX, while emergency financing kept Tesla alive.
The survival of those companies would eventually reshape two of the world’s biggest industries.
The 55 milestones
| Age | Milestone |
|---|---|
| 54 | World’s first trillionaire |
| 54 | Takes SpaceX public |
| 54 | SpaceX acquires xAI |
| 54 | Releases Grok 4 |
| 53 | Launches Robotaxi service |
| 53 | xAI acquires X |
| 53 | Catches Starship booster |
| 53 | Unveils Cybercab |
| 53 | First private spacewalk |
| 53 | Colossus supercomputer |
| 52 | First Neuralink implant |
| 52 | Launches Grok |
| 52 | Rebrands Twitter as X |
| 52 | Founds xAI |
| 51 | Launches first Starship |
| 51 | Buys Twitter |
| 50 | Flies first all-civilian crew |
| 50 | Unveils Optimus robot |
| 49 | Wins NASA moon contract |
| 48 | Launches crew to orbit |
| 48 | Ships Tesla Model Y |
| 48 | Unveils Cybertruck |
| 48 | Launches Tesla Megapack |
| 47 | First Starlink satellites |
| 46 | Launches Falcon Heavy |
| 46 | Unveils Tesla Semi |
| 45 | Starts The Boring Company |
| 45 | Opens first Gigafactory |
| 45 | Founds Neuralink |
| 45 | Unveils Solar Roof |
| 45 | Reflies Falcon 9 |
| 44 | Reveals Tesla Model 3 |
| 44 | Lands a rocket booster |
| 44 | Co-founds OpenAI |
| 44 | Ships Tesla Model X |
| 43 | Unveils Powerwall |
| 43 | Launches Tesla Autopilot |
| 41 | Opens first Superchargers |
| 40 | Ships Tesla Model S |
| 40 | Dragon reaches the ISS |
| 39 | Dragon reaches orbit |
| 39 | Takes Tesla public (IPO) |
| 38 | Falcon 9 first flight |
| 37 | Falcon 1 reaches orbit |
| 36 | Ships first Tesla Roadster |
| 35 | Co-founds SolarCity |
| 32 | Co-founds Tesla |
| 31 | Sells PayPal to eBay |
| 30 | Founds SpaceX |
| 30 | Takes PayPal public |
| 27 | Founds X.com |
| 27 | Sells Zip2 to Compaq |
| 24 | Co-founds Zip2 |
| 19 | Sells PCs from his dorm room |
| 12 | Codes the video game Blastar |
Beyond the milestones
While Musk’s achievements are widely celebrated, his career has also been marked by controversy. His management style, political interventions, disputes with regulators, outspoken social media presence and ambitious timelines have repeatedly drawn criticism from investors, governments and former employees.
Yet few entrepreneurs have transformed multiple industries on the scale Musk has.
Tesla helped accelerate the global transition to electric vehicles. SpaceX dramatically lowered the cost of launching satellites through reusable rockets. Starlink built the world’s largest satellite internet network. Neuralink is attempting to commercialise brain-computer interfaces, while xAI is competing in the rapidly evolving artificial intelligence race.
Whether those bets ultimately succeed or fail, Musk has consistently challenged long-held assumptions about what private companies can accomplish.
At 55, his ambitions extend well beyond building successful businesses. From autonomous vehicles and humanoid robots to Mars colonisation and artificial intelligence, Musk is pursuing technologies that could shape the global economy for decades to come.
For better or worse, few business leaders have had a greater influence on the trajectory of modern technology.
With inputs from agencies.
