On this week, there was a message from Elon Musk that the express test he had done revealed a positive result for Covid-19.

"The disease is almost asymptomatic, only a slight runny nose and cough, a slight increase in body temperature," Elon writes in his Twitter.

In the same statement, Musk said that two more express tests done at the same time showed negative results.

 For a more accurate result, Elon Musk will have to take a PCR test, the results of which may take several days. However, according to doctors, the PCR test, although it takes longer to identify the results, provides almost 100% accuracy.

Elon Musk's positive test results mean NASA will not allow him to attend the upcoming astronaut launch.

The space company, established in 2002 by Elon Musk, planned to start four astronauts into space. The astronauts will stay six months in space, which currently  is most continual space trip sent from the United States.

The space explorers of the mission went into a lightweight isolation about a month ago, and two weeks before the start, they switched to strict quarantine, excluding all contacts.

“It doesn't matter who you are and what your position is, but if you had contact with infected people or a questionable test result, then you will not be allowed to the crew,” NASA officials said.

The CEO of SpaceX tweeted that he had already passed the PCR test and was waiting for the results, and also asked everyone to observe isolation while the test results were being prepared.

At a press summit at the Kennedy Space Center, representatives of SpaceX commented that Elon Musk would not be present at the start of the astronauts.