Are black holes a threat to Earth? No, distant black holes pose no threat to Earth. The closest known black hole, Cygnus X-1, is over 6,000 light-years away. By iCONIFERz|2024-01-19T13:33:55-05:00January 19, 2024|Black Hole|0 Comments Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTumblrPinterestVkXingEmail About the Author: iCONIFERz Leave A Comment Cancel replyComment Save my name, email, and website in this browser for the next time I comment.