Elon Musk (L); Jeff Bezos.Photo: Pascal Le Segretain/Getty; John Shearer/Getty
It’s safe to sayElon MuskandJeff Bezoswon’t be having dinner together anytime soon.
Musk — who was namedTime’sPerson of the Yearthis week — spoke about Bezos during an interview with theFinancial Timespublished on Wednesday.
In addition to being the head of the electric car company Tesla, Musk is also the founder of the aerospace manufacturer SpaceX, which directly competes with Bezos' Blue Origin.
Speaking briefly about Bezos, Musk said in the interview that while his fellow billionaire has “reasonably good engineering aptitude,” he feels Bezos “does not seem to be willing to spend mental energy getting into the details of engineering.”
“[He] does take himself a bit too seriously,” he added of Bezos. “In some ways, I’m trying to goad him into spending more time at Blue Origin so they make more progress. As a friend of mine says, he should spend more time at Blue Origin and less time in the hot tub.”
The interview was published days after Blue Origin sent itsthird crewed mission to space, which includedGood Morning America’sMichael Strahan.
Representatives for Musk did not immediately respond to PEOPLE’s request for comment. A rep for Bezos had no comment.
Musk and Bezos' companies have created tension between the pair in the past.Earlier this year, Blue Origin filed a50-page complaint to the Government Accountability Officeafter NASA awardeda $2.89 billion contract to transport astronauts to the moonto SpaceX.The contract, which NASA announced on April 16, tasks SpaceX with building a lunar lander that will put humans on the Moon for the first time since December 1972.
Elon Musk.Al Drago/Bloomberg via Getty
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
In the complaint, Blue Origin accused NASA of “moving goalposts” for the companies.
“In NASA’s own words, it has made a ‘high risk’ selection,” Blue Origin said in a statement to PEOPLE at the time. “Their decision eliminates opportunities for competition, significantly narrows the supply base, and not only delays, but also endangers America’s return to the Moon.”
RELATED VIDEO: Elon Musk and Grimes Split After 3 Years: ‘We Are Semi-Separated but Still Love Each Other’
In response to aNew York Timesreporter’s Tweet about the complaint,Musk mocked Bezos' company, tweeting, “Can’t get it up (to orbit) lol.”
The two have also repeatedly traded positions for the title of thewealthiest person in the world.
As of Dec. 14, Musk is currently holding the top spot onBloomberg’s Billionaires Index, with a total estimated net worth of $251B. Bezos currently holds the second spot on the list, with an estimated net worth of $195B.
source: people.com