Habitable Zones & Global Climate

The Extended Habitable Epoch Of The Universe For Liquids Other Than Water

By Keith Cowing
astro-ph.EP
January 27, 2021
Filed under
The Extended Habitable Epoch Of The Universe For Liquids Other Than Water
Early habitable planet
SpaceRefcom/Astrobiology.com

At high redshifts, the temperature of the cosmic microwave background (CMB) was higher than its value today. We explore the possibility that life may have arisen early because the higher CMB temperature would have supplied the requisite energy for the existence of different solvents on the surfaces of objects.

At redshifts of z≲70, after the first stars are predicted to have formed, a number of molecules (but not water) might have existed in liquid form over intervals of ∼10 Myr to ∼100 Myr. We delineate the challenges and prospects for life in the high-redshift Universe, and assess the various candidates for alternative biochemistries in this context — of the options considered herein, we conclude that ethane is probably the most promising contender..

Manasvi Lingam, Abraham Loeb

Comments: 6 pages; 0 figures; 1 table
Subjects: Earth and Planetary Astrophysics (astro-ph.EP); Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Cite as: arXiv:2101.10341 [astro-ph.EP] (or arXiv:2101.10341v1 [astro-ph.EP] for this version)
Submission history
From: Manasvi Lingam [view email]
[v1] Mon, 25 Jan 2021 19:00:04 UTC (68 KB)
https://arxiv.org/abs/2101.10341
Astrobiology,

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