Hydrogen Atmospheres Could Sustain Liquid Water on Exomoons Around Rogue Planets for Up to 4.3 Billion Years
To the point
David Dahlbüdding and colleagues propose that exomoons orbiting rogue planets could remain warm enough for liquid water for about 4.3 billion years thanks to a thick hydrogen atmosphere and tidal heating, offering a long window for life to emerge even when the host planet itself is not habitable.
