AN out-of-control Chinese rocket will fall back to Earth today as scientists reveal where it is likely to fall.

Experts at The Aerospace Corporation have plotted the trajectory of what remains of the massive rocket as it makes an uncontrolled re-entry.

Experts have plotted where the Chinese rocket is likely to return to Earth

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Experts have plotted where the Chinese rocket is likely to return to EarthCredit: The Aerospace Corporation
A Long March-5B Y3 rocket carrying China's space station lab module Wentian after lifting off from Wenchang Spacecraft Launch Site on July 24, 2022

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A Long March-5B Y3 rocket carrying China’s space station lab module Wentian after lifting off from Wenchang Spacecraft Launch Site on July 24, 2022Credit: Alamy

Explaining the graphic issued by the corporation, it said possible re-entry points could be anywhere along the blue or yellow lines.

Although in an update on Twitter, it said it was still too early to “determine a meaningful debris footprint.”

The latest available tracking data projects re-entry will occur around 6.15pm UK time, give or take an hour, according to the Aerospace Corp., a government-funded nonprofit research centre near Los Angeles.

The Beijing government said earlier this week it poses little risk to anyone on the ground.

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The Long March 5B rocket blasted off on Sunday to deliver a laboratory module to the new Chinese space station under construction in orbit.

It marked the third flight of China‘s most powerful rocket since its maiden launch in 2020.

As occurred during its first two flights, the rocket’s entire main-core stage – which is 100 feet (30 metres) long and weighs 22 tons (about 48,500 lb) – has already reached low orbit.

It is expected to tumble back toward Earth once atmospheric friction drags it downward, according to American experts.

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Ultimately, the rocket body will disintegrate as it plunges through the atmosphere.

However, it is large enough that numerous chunks will likely survive a fiery re-entry to rain debris over an area some 2,000 km (1,240 miles) long by about 70 km (44 miles) wide, independent U.S.-based analysts said on Wednesday.

The overall risk to people and property on the ground is fairly low, Aerospace analyst Ted Muelhaupt told reporters in a news briefing.

That’s because 75 per cent of Earth’s surface in the potential path of debris is water, desert or jungle.

Nevertheless, the possibility exists for pieces of the rocket to come down over a populated area.

That famously occurred in May 2020 when fragments of another Chinese Long March 5B landed on the Ivory Coast, damaging several buildings. No injuries were reported, Muelhaupt said.

By contrast, he said, the United States and most other space-faring nations generally go to the added expense of designing their rockets to avoid large, uncontrolled re-entries.

That imperative has largely been observed since large chunks of the Nasa space station Skylab fell from orbit in 1979 and landed in Australia.

Overall, the odds of someone being injured or killed this weekend from falling rocket chunks range from one-in-1,000 to one-in-230.

That’s well above the internationally accepted casualty risk threshold of one-in-10,000, he told reporters.

But the risk posed to any single individual is far lower, on the order of six chances per 10 trillion. By comparison, he said, the odds of being struck by lightning are about 80,000 times greater.

Chinese foreign ministry spokesman Zhao Lijian said the probability of debris causing harm to aviation or to people and property on the ground was very low. He said most components of the rocket would be destroyed on re-entry.

Last year, Nasa and others accused China of being opaque after the Beijing government kept silent about the estimated debris trajectory or the reentry window of its last Long March rocket flight in May 2021.

Debris from that flight ended up landing harmlessly in the Indian Ocean.

A few hours after Zhao spoke on Wednesday, the China Manned Space Agency (CMSA) gave the approximate position of its latest rocket in a rare public statement.

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As of 4.00pm (0800 GMT), the agency said the rocket was circling the globe in an elliptical orbit that was 263.2 km high at its farthest point and 176.6 km high at its nearest.

No estimated re-entry details were given by CMSA on Wednesday.

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