Should we really be worried about China's uncontrolled rocket booster reentries?
Debris from the core stage of a Chinese rocket has splash-landed in the Pacific Ocean after splitting in half on its uncontrolled descent back to Earth. Splashdown is part of a growing trend, in which China lets its space junk crash to Earth in uncontrolled reentries.
Ted Muelhaupt, a consultant for the Aerospace Corporation, a U.S. government-funded nonprofit research center based in California, said that though it was common for space objects, such as disused satellites, of around a ton to rain down on Earth, the mass of the Long March 5B rocket debris means that not enough of it will burn up in the atmosphere.
But the Long March 5B booster engines can only fire once, so that boosters used for missions near to Earth enter a doom spiral above our heads before landing in an unpredictable location. "You're 80,000 times more likely to get hit by lightning, so no, don't worry about it," Muelhaupt said.
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