after sending the Tianhe to 400 km orbit, the core stage is about to re-entry on 7 May. Satflare has made forecast of debris fall zones from David Hah: 8 May: EU SST latest autonomous predictions show that the re-entry window of object CZ-5B R/B is 2021-05-09 01:59 UTC ±467 min. 9 May. 2021年5月9日10时24分，长征五号B遥二运载火箭末级残骸已再入大气层，落区位于东经72.47°，北纬2.65°周边海域 EU SST langbroek aerospace Leolabs . n2yo