Lambert/Ullstein Bild/Getty Images; Alex Wong/Getty Images; Blue Origin; Samantha Lee/Insider
- Tesla and SpaceX CEO Elon Musk and Amazon and Blue Origin founder Jeff Bezos have been rivals for 20 years.
- They've sparred over their space ambitions, traded barbs, and swapped places as the world's richest person.
- Here's how their rivalry began and everything that's happened in the years since.
They're two of the world's richest men, and their rivalry dates back to the early 2000s.
Elon Musk and Jeff Bezos have sparred for years, often publicly, ever since a reported contentious dinner they had in 2004.