中国天眼FAST发现宇宙中最大原子气体结构

【中国天眼FAST发现宇宙中最大原子气体结构】近日，中国科学院国家天文台利用FAST进行成像观测，在致密星系群——“斯蒂芬五重星系”及周围天区，发现了1个尺度大约为两百万光年的巨大原子气体系统，也就是大量弥散的氢原子气体。这是迄今为止，在宇宙中探测到的最大的原子气体系统。该成果于北京时间2022年10月19日23点在国际学术期刊《自然》杂志发表。这项发现预示着，宇宙中可能存在更多这样大尺度的低密度原子气体结构，对研究星系及其气体在宇宙中的演化提出了挑战。（央视）","multimedia":{"img_url":["https://n.sinaimg.cn/zhibo/131/w930h801/20221019/7f5a-a9d0f1357880f5fbe6c65a37d85280fa.png"]},"commentid":"live:finance-152-2832746:0","compere_id":0,"creator":"zhouwei6@staff.sina.com","mender":"zhouwei6@staff.sina.com","create_time":"2022-10-19 23:03:09","update_time":"2022-10-19 23:03:58","is_need_check":"1","check_time":"2022-10-19 23:04:01","check_status":"1","check_user":"mingyu@staff.sina.com.cn","is_delete":0,"top_value":0,"is_focus":0,"source_content_id":"0","anchor_image_url":"","anchor":"直播员","ext":"{"stocks":[],"needPush":false,"needAIPush":false,"needCMSLink":true,"needCalender":false,"needProvince":"北京"}","old_live_cid":"0","tab":"","tag":[{"id":"8","name":"其他"}],"like_nums":0,"comment_list":{"list":[],"total":0,"thread_show":0,"qreply":0,"qreply_show":0,"show":0},"docurl":"","rich_text_nick_to_url":[],"rich_text_nick_to_routeUri":[],"compere_info":""},{"id":2832745,"zhibo_id":152,"type":0,"rich_text":"市场消息：复星国际拟以不超160亿元人民币的价格出售南京南钢钢铁的股权。