Saturday, June 15, 2024

Chinese rocket to tumble back to Earth in uncontrolled re-entry

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The Long March-5B Y2 rocket, carrying the core module of China’s space station Tianhe, takes off from Wenchang Space Launch Center in Hainan province, China April 29, 2021. (File Photo for representation purpose only)

BEIJING: A large segment of a Chinese rocket is expected to make an uncontrolled re-entry into the Earth’s atmosphere on the weekend, but Beijing has downplayed fears and said there is a very low risk of any damage.
A Long March-5B rocket launched the first module of China’s new space station into Earth orbit on April 29. Its 18-tonne main segment is now in freefall and experts have said it is difficult to say precisely where and when it will re-enter the atmosphere.
Re-entry is expected to be around 2300 GMT on Saturday, according to the Pentagon, with a window of plus or minus nine hours either side.
Chinese authorities have said most of the rocket components would likely be destroyed on re-entry.
“The probability of causing harm… on the ground is extremely low,” Chinese foreign ministry spokesman Wang Wenbin told reporters on Friday.
Although there has been fevered speculation over exactly where the rocket — or parts of it — will land, there is a good chance any debris that does not burn up will just splash down into the ocean on a planet made up of 70 percent water.
“We’re hopeful that it will land in a place where it won’t harm anyone,” said Pentagon spokesman Mike Howard.
Howard said the United States was tracking the rocket segment but “its exact entry point into the Earth’s atmosphere cannot be pinpointed until within hours of its re-entry”.
Defense Secretary Lloyd Austin earlier said that the US military had no plans to shoot it down, and suggested that China had been negligent in letting it fall out of orbit.
“Given the size of the object, there will necessarily be big pieces left over,” said Florent Delefie, an astronomer at the Paris-PSL Observatory.
“The chances of debris landing on an inhabited zone are tiny, probably one in a million.”
In 2020, debris from another Long March rocket fell on villages in the Ivory Coast, causing structural damage but no injuries or deaths.


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