The Dutch astronaut Andrew Kuypers accidentally called 911 from the International Space Station.
He said he was trying to contact the NASA Johnson Space Center in Houston, and had to call 9 for an outer line, then 011 to contact an international line.
But he missed zero, and instead of calling 911, he set up a security alert at the center of the Johnson Space Center.
A Dutch astronaut accidentally called 911 from space while orbiting Earth at the International Space Station (ISS).
André Kuipers for the Dutch public broadcaster Nederlandse Omroep Stichting said he called on US emergency services after calling the wrong number while trying to contact NASA's Johnson Space Center in Houston.
"If you're in space and you make a call through Houston, you will first call 9 for an outer line, then 011 for an international line," said the 60-year-old astronaut and doctor, according to a translation from the Science and Technology website Futurism.
But Kuypers missed zero, and ended up calling 911 instead of 9011.
His mistakenly issued a security warning at the center of the Johnson Space Center, whereby employees were wondering if everything was fine.
Kuypers, who competed with two space missions lasting more than 200 days, said the next day he received an email from Houston, wondering if he had called him 911.
"I was a bit disappointed that they did not come," he joked.
Read more: The images show that the Chinese lunar rover makes songs on the far side of the moon when it starts its historic research mission
Kuypers said it was surprisingly easy to contact the Earth from space and that astronauts could use terrestrial telephones over satellites about 70% of the time.
He said, however, there is often a time lag that makes it difficult for people to talk to the Earth.
"Sometimes people would hang out because they thought I did not say anything, so I started talking as soon as I dialed the last number," he recalls.
This is not the first time an astronaut has called the wrong number of ISS.
In 2015, the first British astronaut Tim Peak, clarified that he did not walk around called a woman when he called out of the universe and said: "Hello, is this planet Earth?" He would actually just call the wrong number.
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