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Extreme Power of Black Hole Revealed in Chandra/Hubble composite photo
- ck2 13y agoEvent horizon or not, still impressive.
- gus_massa 13y ago> Shock fronts - akin to sonic booms - caused by the expanding cavities and the release of energy by sound waves reverberating through the hot gas provide a source of heat that prevents most of the gas from cooling and forming new stars. OK, it’s not perfect vacuum, so there is a very cold and very thin gas, so it can transmit sound. It is theoretically correct, but nevertheless I feel it’s very strange to read about sound in the middle of the space.