Cosmic event horizons and the light-speed limit for relative radial motion
Cosmic event horizons separate spacetime into disjoint regions: those regions whose light signals can reach us, and more distant regions we cannot, even in principle, observe. For one type of cosmic horizon, associated with universes that keep expanding forever, there is a simple intuitive picture o...
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| Format: | Article |
| Language: | English |
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Maynooth Academic Publishing
2020-07-01
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| Series: | The Open Journal of Astrophysics |
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| Online Access: | https://astro.theoj.org/article/14277-cosmic-event-horizons-and-the-light-speed-limit-for-relative-radial-motion |