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China’s Latest Out-of-Control Rocket Expected to Crash on November 4


The launch of Long March 5B on July 24, 2022.

The launch of Long March 5B on July 24, 2022.
Photo: Liu Huaiyu (AP)

A 21-metric-ton core stage is poised to perform an uncontrolled re-entry into Earth’s atmosphere at 10:21 pm ET on November 4, give or take around 16 hours. Sadly, this marks the fourth time that a remnant from China’s Long March 5B rocket has threatened human lives and property.

The Long March 5B blasted off from Wenchang Space Launch Center in Hainan on Monday, October 31, delivering the third and final module, called Mengtian, to China’s Tiangong space station. Most rocket stages are brought down with reignited engines, allowing them to be steered away from populated areas, but not the Long March 5B. Very irresponsibly, China’s space agency has not taken this precaution with its heavy-lift launch vehicle, leaving it largely up to chance as to where it might land.

So now we’re forced to guess as to where the core stage might fall. As on previous occasions, the Aerospace Corporation’s Center for Orbital Reentry and Debris Studies (CORDS) is tracking the object and providing regular updates. The company’s initial prediction suggests the uncontrolled re-entry will happen at 10:21 pm ET on Friday, November 4 (Saturday, November 5 at 2:21 am UTC). The Aerospace Corporation devises its estimates by analyzing data from the US Space Force’s Space Surveillance Network.

It’s still too early to know where the debris will land. The possible area in which the core stage might fall, known as the “debris footprint,” will become constrained over time, but if the prior episodes were of any indication, we won’t really know until the minutes prior to re-entry. Objects coming in from space travel at speeds reaching 17,500 miles per hour (28,164 kilometers per hour), which means a one-hour error in the re-entry time translates to a 17.500-mile (28,164 km) error in the predicted crash location.

This will mark the fourth time that a Long March 5B core stage will crash in an uncontrolled manner. On the previous three occasions, debris fell onto an inhabited area along the west coast of Africa; something the Indian Ocean near the Maldives; and in northern Borneo. Mercifully, no one has been injured or killed, but scientists have raised concerns that this could eventually happen.

More: Photos Show Launch of SpaceX’s Falcon Heavy With Classified Military Payload.



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