Earth-Sized Moon on a Rogue Planet Could Sustain Liquid Water for Billions of Years via Tidal Heating

To the point

Moons around rogue planets could stay warm enough for liquid water for billions of years because tidal heating and hydrogen-rich atmospheres can trap heat, enabling life without starlight, a finding led by David Dahlbüdding.

No sun, no problem? How life could thrive on moons of starless rogue planets
space.com

No sun, no problem? How life could thrive on moons of starless rogue planets

The cradle of life does not necessarily require a sun.