Ultra Long-Term Cosmology and Astrophysics

TL;DR

This paper explores the potential of future astronomical observations over a 10,000-year timescale, highlighting new possibilities for measuring cosmic phenomena and implications for gravity studies.

Contribution

It introduces the concept of ultra long-term cosmology, analyzing how extended observational timelines could enable new measurements and insights into the universe's evolution.

Findings

Redshift drift measurements become feasible over 10,000 years.

Rare cosmic events could be observed within a human lifetime.

Implications for gravity-related measurements are significant.

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.