Amazon's founder and CEO Jeff Bezos also oversees Blue Origin, a competing space exploration company to Mr Musk’s SpaceX. The book in question was titled ‘Unreported Truths about COVID-19 and Lockdowns: Part 1: Introduction and Death Counts and Estimates’ and was written by Alex Berenson. Mr Musk tweeted: “This is insane Jeff Bezos.
“Time to break up Amazon.
“Monopolies are wrong!”
According to a photo posted by Mr Berenson, a former New York Times reporter, Amazon took action because the 22-page book failed to meet guidelines, which the retailer did not specify.
They added: “We are referring customers to official sources for health information about the virus.”
Elon Musk has called for Amazon to be broken up
Amazon chief Jeff Bezos with Lauren Snachez at the Tom Ford AW20 Show
Amazon had no comment on Mr Musk’s calls for it to be broken up.
They added that the action against Mr Berenson’s book was taken in error.
It is now available via the Kindle e-reading service.
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Mr Berenson, however tweeted: “Thanks to Elon Musk and everyone who helped.”
Earlier this month, Mr Musk tweeted he was planning on taking a break from Twitter.
“Off Twitter for a while,” he explained.
Last week, Mr Musk saw SpaceX achieve a significant milestone.
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Mr Musk's celebrates the success of SpaceX's first manned spaceflight
Jim Bridenstine is the NASA administrator
NASA astronauts Robert Behnken and Douglas Hurley flew to the International Space Station on SpaceX’s Crew Dragon spacecraft.
This was SpaceX’s first manned spaceflight.
NASA announced at the end of April that SpaceX, Blue Origin and Dynetics had won contracts to design and build a human landing system for the Artemis program.
Changes over time in the NASA Budget
Administrator Jim Bridenstine said in a statement: "With these contract awards, America is moving forward with the final step needed to land astronauts on the moon by 2024, including the incredible moment when we will see the first woman set foot on the lunar surface.
"This is the first time since the Apollo era that NASA has direct funding for a human landing system, and now we have companies on contract to do the work for the Artemis program.”
In Greek mythology, Artemis is the twin sister of Apollo.
Apollo 17 was NASA's most recent lunar landing
Apollo was the codename for previous NASA lunar missions.
Apollo 17 was the most recent lunar landing.
It took place in December 1972 with Commander Eugene Cernan and Lunar Module Pilot Harrison Schmitt being the last two humans to set foot on the Moon.