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

2???????

3??????????

4??????????

5?????wx

???12????????????18????????,????????????????????«????????????????»??????,???,????????????????????,????????????

??,????????????,?????????????????????????A*(Sagittarius A*)???????

????????,?????????????A*????????,?S??????(S-cluster)??S?????????,?????????,????A*?????,????????

???????????,????????????????????????Florian Peißker???????,?????????,????????????S????????????????D9,?????????????D9a??????????D9b?????????,??????,????????????????????????????270??????,?S???

????????,?????S??,????????,??????????????

?????,???D9??,???S?????,??100????????????????A*???

??????,?????(????? ??? ??????????????????? ????????? ???????????????????? ?????)

?????:????