https://www.scienceforums.net/topic/114294-blackhole-multiverse/
Blackhole Multiverse - Amateur Science - Science Forums
Poplawski thinks every blackhole contains another universe. Yes, no, or, maybe.
amateur scienceblackholemultiverseforums
https://steamcommunity.com/groups/AMSCI
Steam Community :: Group :: Amateur Science
our official Site is Amateurscience.no-ip.org Amateur Science
steam communityamateur sciencegroup