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

2?51????

3?100??????

4???gm????

5?????600

??,????“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?????

????????????:??