Elon Musk turns 55: The 55 biggest milestones that changed tech, space, and AI

On June 28, Elon Musk celebrated his 55th birthday, marking a remarkable trajectory as an entrepreneur, engineer, and pioneer in technology and space. Known for his diverse roles as a trillionaire and an innovator, Musk's contributions have reshaped industries including aerospace and artificial intelligence. His journey is filled with notable milestones that have captivated the world. From a young age, Musk displayed entrepreneurial spirit; he created a video game called Blastar at just 12 years old, selling it for $500. By 19, he was building and selling PCs from his college dorm, and by 24, he co-founded Zip2, a city-guide software firm that he sold for $307 million. Following this success, he launched X.com, which ultimately evolved into the widely recognized payment platform, PayPal. In his 30s, Musk continued to make waves in the tech world. He took PayPal public and saw it acquired by eBay for $1.5 billion, gaining around $165 million from the deal. 30 years old and already a major player, he founded SpaceX, marking his entry into the aerospace sector. At 32, he co-founded Tesla Motors, focusing on electric vehicles, and three years later, he established SolarCity, aiming to revolutionize solar energy. His 40s were characterized by groundbreaking achievements. Musk introduced Tesla's Supercharger stations at 41, addressing concerns about electric vehicle range. By 43, he had launched the Powerwall battery and unveiled Tesla Autopilot. The following years saw the introduction of the Tesla Model 3, the first reflight of a used Falcon 9 rocket, and the launch of the Falcon Heavy—then the most powerful operational rocket. As Musk approached 50, he achieved even more. His company launched the first all-civilian crew to orbit and unveiled the Optimus humanoid robot. In his 51st year, he made headlines with his dramatic acquisition of Twitter, later rebranded as X. He founded xAI and introduced Grok, an AI chatbot, along with a Neuralink chip implanted in a human brain. Musk's 53rd year was marked by the completion of the Colossus supercomputer and the first private spacewalk. He unveiled the autonomous Cybercab and achieved the remarkable feat of recovering the Super Heavy booster for SpaceX, a testament to his engineering prowess. Last year, at 54, he launched Grok 4 and took SpaceX public, briefly reclaiming the title of the world's first trillionaire. As Musk turns 55, the anticipation grows for what innovations and milestones he will pursue next, further influencing technology, space exploration, and AI.