The US on Thursday said it was watching the path of the object but now had no plans to shoot it down. "Hopefully in the ocean, or someplace like that".
Mr Austin also indirectly criticised China, he said: "There should be a requirement to operate in a safe and thoughtful mode and make sure that we take those kinds of things into consideration as we plan and conduct operations". However, space experts are telling the public there's no reason to panic.
What will happen to the rocket?
Thursday, Mujahid expected that the Chinese rocket would cross Jordanian skies from Egypt at around 12:05am Friday.
"Much of the earth is covered in water, so there's nearly no risk" to the public, said Dan Oltrogge, founder of the Space Safety Coalition and top policy expert at the Commercial Space Operations Center, a firm that helps companies track space traffic.
Has a rocket fallen to Earth before?.
WA premier backs snap COVID-19 lockdowns
To date 27 people have got in touch with Healthline to say they were in the locations of interest at the relevant time. In Perth on Saturday authorities confirmed a hotel security guard and his two roommates tested positive to Covid-19.
Song claimed China's "space monitoring network" will keep a close eye on the falling rocket and "take necessary measures if any damage would occur to passing ships", but in reality the impact region will not be known with any precision until just hours before the debris comes down.
China's space agency has yet to say whether the core stage of the huge Long March 5B rocket is being controlled or will make an out-of-control descent.
Wang said China "pays great attention to the re-entry of the upper stage of the rocket into the atmosphere".
"China decided they would rather use a simpler design and hope that they get lucky with the stage re-entering uncontrolled but not hurting anyone".
Did China launch a rocket?
Usually, this would be in what is called the oceanic pole of inaccessibility - the furthest place from land in the South Pacific, between Australia, New Zealand and South America.
"U.S. Space Command is aware of and tracking the location of the Chinese Long March 5B in space, but its exact entry point into the Earth's atmosphere can not be pinpointed until within hours of its reentry, which is expected around May 8", a statement from the U.S. Space Command read earlier this week.
A large part of a Chinese rocket launched last month is now tumbling uncontrollably back to Earth, and no one knows where it will land.
The space station will be complete by 2022, with China also planning to build a moon base in cooperation with Russian Federation.