A Long March 5B rocket launches Tianhe, the core module of China's new space station, on April 28, 2021.

A Long March 5B rocket launches Tianhe, the core module of China's new space station, on April 28, 2021. (Image credit: CASC)

The debris from the core stage of a Chinese rocket has splashed down in the Pacific Ocean.

The Chinese Long March 5B rocket stage, which was used to deliver the third and final module to the space station, landed in the south-central Pacific at 6:01. The United States Space Command sent out a message on the 4th of November. One space expert thinks that the debris could have made it to Puerto Escondido in Oaxaca, Mexico.

Four times in the last two years, China has dumped its rockets in an uncoordinated manner. In the past, metallic objects rained down on villages in theIvory Coast, debris fell in the Indian Ocean near theMaldives, and rocket chunks crashed close to villages in Borneo. 300 flights over northeastern Spain, including the cities of Tarragona, Barcelona and Reus and the island of Ibiza, were delayed for 40 minutes because of the risk of colliding with one another.

The biggest spaceship ever to fall from the sky is open in a new tab.

The People's Republic of China is taking unnecessary risks with their rocket stage reentering. NASA Administrator Bill Nelson said in a statement that they did not give specific trajectory information which is needed to predict landing zones. All spacefaring nations need to be responsible and transparent in their space activities and follow established best practices for the safe return of large rocket body debris.

Ted Muelhaupt is a consultant for theAerospace Corporation, a U.S. government-funded nonprofit research center.

We, the world, don't launch things this big intending them to fall somewhere. Muelhaupt said that they haven't done that in 50 years. There have been accidents in the large reentries in the last 50 years.

This map shows the possible areas where China's huge Long March 5B rocket debris could fall to Earth. The yellow icon is the midpoint of the reentry window.

This map shows the likely impact area where China's huge Long March 5B rocket debris would fall to Earth on Nov. 4, 2022. (Image credit: Aerospace Corporation)

The biggest parts of a rocket are more likely to burn up on reentering. Engineers try to aim rockets so that they land in the ocean. Some of the boosters are designed to fire a few extra blasts from their engines to get them back into a controlled reentry if they make it to the other side.

The Long March 5B booster engines can only fire once, so that they can only land in an unpredictable location.

China has dismissed concerns about potential damage as "shameless hype" and insists that reentries are commonplace. Western reporting of China's falling rockets was accused of bias by a Chinese Ministry of Foreign Affairsspokesperson. In March 2021, debris from a falling SpaceX rocket smashed into a farm in Washington state, which was covered by Western news outlets. In August 2022, a second set of debris landed on a sheep farm in Australia.

The odds that someone will be hurt by a falling rocket are small.

Muelhaupt said that you're 80,000 times more likely to get hit by lightning.

Christopher Newman, a professor of space law and policy at Northumbria University in London, said that it is difficult to establish an international consensus on how to deal with space objects that return to Earth in an uncontrollable manner.

Newman said that objects such as rocket bodies are three times more likely to impact on cities in the Global South. We only have to look at the attitude of countries to space tracking and space situational awareness to see that the international community is not motivated to try and solve this issue.

When there is a disaster or tragedy, it is often too late for change. There are warnings for all users of space, but the question is whether they will take action now to deal with them.

Muelhaupt hopes that discussion of the problems caused by Long March 5B rockets will lead to better rocket designs.

It's really difficult to approach this kind of thing through laws and treaties. If there is an accepted norm of behavior, you should not do that. It can come from the ground up. For the next time they make a design like this, we hope that they will take the reaction to this one into account and make the design changes.