All spacetime in our universe consists of gravitational horizons, the majority external (like that of the observable universe) or separate (like that of most black holes), either relative to a particular observer. Hawking radiation is therefore acting, albeit with very low flux, throughout our cosmos of observation. This concept may extend quantum gravity from the special case of the black hole to spacetime in general. A measurable consequence of this process might be a global effect such as sustaining isotropy and homogeneity.(adsbygoogle = window.adsbygoogle || []).push({});

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# All spacetime horizons exhibit Hawking radiation

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