Three of the founders of America’s top private space companies have stated their personal desire to fly into space.

But only one will be first.

Jeff Bezos is head of the rocket company Blue Origin. He also founded the online store Amazon. Bezos has announced plans to make his wish come true next month on the company’s first human space flight. If successful, the 57-year-old would become the first person to ride his own company’s rocket into space.

Two other founders — Elon Musk of SpaceX and Richard Branson of Virgin Galactic — have said they also want to ride into space on a company-built spaceship.

“Ever since I was five years old, I’ve dreamed of traveling to space,” Bezos said in a message announcing his plans on Instagram. He said he would be making the trip with his brother, Mark. “On July 20th, I will take that journey with my brother. The greatest adventure, with my best friend,” Bezos said.

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