MealtimeVideos Cafe @lemmy.cafe FenrirIII @lemmy.world 2mo ago 13:30 Black Hole's Evil Twin - Gravastars Explained Last 3 minutes are an advertisement 1 crossposts Science Streams @rss.ponder.cat free @rss.ponder.cat BOT 8mo ago Black Hole's Evil Twin - Gravastars Explained