????:1??????????:??????????

2?????????

3????????

4????????

5??????????

?,????“2024 YR4”???????“??????8?”??????????

???,???,??????????????????????????,?????????,????????“???”,????????????“?????”????

????

????:????????(CNN)

“2024 YR4”?????2024?????12??????27???????????????????????????,??40????90?,?????

????????????????????2025?1?????,NASA????,?????????4800????????????????????,?,???????

?????????????,“2024 YR4”????????“????”????“??”??1???????,?????????????????????,????????10????????????

2013????????,???????????20?,????,?20????????30???????????????,?????,????,?7000????????,????1000???????????

????:?????