China’s latest launch of a huge rocket is, once again, raising alarm that the debris will crash into the Earth’s surface in an uncertain location and at great speed.
, the rocket shed its empty 23-ton first stage in orbit, meaning that it will continue to loop the Earth over coming days as it gradually comes closer to landing. This flight path is difficult to predict because of fluctuations in the atmosphere caused by changes in solar activity.Although experts consider the chances of debris hitting an inhabited area very low, many also believe China is taking an unnecessary risk.
Before the launch, Jonathan McDowell, an astronomer at the Center for Astrophysics who closely tracks space launches, wrote on Twitter that he had hoped China would have adopted a new design to allow the core stage to be actively deorbited.Late on Sunday, McDowell added that U.S. Space Command orbital data about two objects from the launch had confirmed that the core stage “remains in orbit and was not actively deorbited.
But many believe launch designs like the Long March 5B’s are an unnecessary risk. “Launch providers have access to technologies and mission designs today that could eliminate the need for most uncontrolled re-entries,” the authors wrote. They proposed global safety standards mandating controlled reentry.
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