Space Daily July 20, 2026 • 03:30

We assume life needs a sun, but a team at Ludwig Maximilian University of Munich calculated in 2026 that moons orbiting starless rogue planets could sustain liquid oceans for up to 4.3 billion years — roughly as long as Earth has existed — without a single ra - Space Daily

We assume life needs a sun, but a team at Ludwig Maximilian University of Munich calculated in 2026 that moons orbiting starless rogue planets could sustain liquid oceans for up to 4.3 billion years — roughly as long as Earth has existed — without a single ra - Space Daily

The conditions for life may not require starlight at all—just the right moon orbiting the right rogue planet.

An Earth-sized moon orbiting a Jupiter-like rogue planet could retain surface liquid water for as long as 4.3 billion years without receiving energy from a star, according to a 2026 modelling study.
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