A 25-ton Chinese rocket booster will crash to Earth today. What’s the risk?

The core stage of a Chinese Long March 5B rocket is set to tumble uncontrollably back to Earth today in a reentry that China is tracking closely and has said poses little risk.

The roughly 25-ton (23 metric tons) rocket stage, which launched on July 24 to deliver the Wentian laboratory cabin module to China’s incomplete Tiangong space station, is predicted to reenter Earth’s atmosphere on July 30 at 12:15 pm ET, give or take 1 hours, according to researchers at The Aerospace Corporation’s Center for Orbital and Reentry Debris Studies (opens in new tab).

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