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 ray of starlight

The conditions for life may not require starlight at all—just the right moon orbiting the right rogue planet. The post We assume life needs a sun, but a team at Ludwig Maximilian University of Munich calculated in 2026 that moons orbiting starless rogue plane…