Life on Titan May Signal Early Life in the Universe

TL;DR

This paper explores how Titan's conditions could indicate that life may have originated early in the universe, suggesting that life could exist in diverse environments beyond Earth.

Contribution

It proposes that Titan-like worlds could harbor life and that early life might have emerged in metal-rich environments shortly after the Big Bang.

Findings

Titan's surface temperature matches early universe conditions.

Titan's subsurface and surface liquids could support life.

Early galaxies' environments might have fostered life emergence.

Abstract

The temperature of the cosmic microwave background (CMB) was equal to the surface temperature of Saturn's moon Titan, 94K, at a redshift z=33.5, after the first galaxies formed. Titan-like objects would have maintained this surface temperature for tens of Myr irrespective of their distance from a star. Titan has the potential for the chemistry of familiar life in its subsurface water ocean, as well new forms of life in the rivers, lakes and seas of liquid methane and ethane on its surface. The potential future discovery of life on Titan would open the possibility that the earliest lifeforms emerged in metal-rich environments of the earliest galaxies in the universe, merely 100 Myr after the Big Bang.