Ultra Long-Term Cosmology and Astrophysics

Abstract

We examine astronomical observations that would be achievable over a future timeline corresponding to the documented history of human civilization so far, $\sim 10^4$ years. We examine implications for measurements of the redshift drift, evolution of the CMB, and cosmic parallax. A number of events that are rare on the scale of centuries will become easily observable on a timescale $\sim 10^4$ years. Implications for several measurements related to gravity are discussed.

4 pages, no figures, references updated and typos corrected

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• The Confrontation between General Relativity and Experiment
• Risks for life on habitable planets from superflares of their host stars
• Quantifying the impact of future Sandage-Loeb test data on dark energy constraints
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Cited by in corpus (2)

• Constraining minimally extended varying speed of light by cosmological chronometers
• Dynamical analysis of the redshift drift in FLRW universes