Do you think putting a lightning rod on a church steeple shows a lack of confidence?
Go to Harbor Freight and purchase a Fluer ( Heat Detector) for $25. It looks like a radar gun. Stand outside your house and aim it at the house. The screen will change red where the heat is escaping from your house. Now use the appropriate weather seal for the areas showing red. Weather stripping around doors. Storm windows over window panes, foam sealer around pipes and vents, etc.
remember that some gas central heating systems need a flow of air to prevent carbon monoxide poisoning
Bad choice of words. Black star would have been a better word. It's called a black hole because since it gives off no light it's a black or dark area. You're right it is a collapsed star and like all stars is a sphere. . Many people picture a black hole as a hole like a hole in the ground and it you could somehow go through the hole you'd end up in another universe or something. Imagination is one thing but unfortunately science fiction has put ideas like wormholes into people's minds that have no basis in reality or the laws of physics. Wormholes are only theoretical. .
