#blackholeUnmoderated tagAll postsExplore CommunitiesTrending CommunitiesSteemitCryptoAcademyNewcomers' Communityআমার বাংলা ব্লগSteem AllianceSteem POD TeamKorea • 한국 • KR • KOSTEEM CN/中文Beauty of CreativityComunidad LatinaTron Fan ClubAVLE 일상Steem For Lifestyle#blackholeTrendingHotNewPayoutsMutedbeam-me-up (54)in #astronomy • 18 days agoA black hole is stirring gas across 300,000 light-yearsI read about this yesterday and I still keep thinking about how big it is. There is a quasar called H1821+643, over…