Jeff Bezos, Amazon founder and world’s richest man, is flying to the edge of space today in a space rocket developed by his company Blue Origin, becoming the second business tycoon to do so after Richard Branson of Virgin Galactic.

Bezos’s three co-passengers will be his 53-year-old brother Mark, female aviation pioneer Wally Funk, 82, and Oliver Daemen, 18, who takes the place of an anonymous person who bid $28 million for the last seat but then pulled out.

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With hours to go for New Shepard and its to take off, 57-year-old Jeff Bezos said he was excited and curious. “People keep asking if I am nervous. I am not really nervous, I am excited. I am curious. I want to know what we are going to learn,” Bezos told the ‘CBS This Morning’ programme on Monday.

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“We have been training. This vehicle is ready. This crew is ready. This team is amazing. We just feel really good about it,” the Amazon founder added.

So, who are the passengers travelling with Bezos to the edge of space. Here’s a look:

Mark Bezos

Mark Bezos, who is four years younger to his brother, attended Texas Christian University, graduating in 1992 with a degree in advertising and public relations, according to his LinkedIn page. He worked with New York City ad firms like DDB and Saatchi & Saatchi. In 1999, he founded his own marketing company. The same year, he became a director at the Bezos Family Foundation.

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Mary Wallace aka Wally Funk

Mary Wallace “Wally” Funk is an American aviator and Goodwill Ambassador who was born on February 1, 1939. She was a member of the Mercury 13 and the first female aviation safety investigator for the National Transportation Safety Board. She was also the first female civilian flying instructor at Fort Sill, Oklahoma, and the first female Federal Aviation Agency inspector.

Oliver Daemen

Oliver Daemen is a student who plans to study innovation and physics at the University of Utrecht in the Netherlands and has been a space enthusiast since age 4. Daemen moved up to take the flight after a seat won by an anonymous winner pulled out. Daemen’s seat was paid for by his father Joes, who is CEO and founder of Somerset Capital Partners. Daemen will, with this flight, become the youngest person in space, beating Russian cosmonaut Gherman Titov, who was 25 when he flew to space in 1961.