Planets without stars might have moons suitable for life
With the right orbit and atmosphere, such a moon might stay warm for over a billion years
![A dark planet in space with no star nearby, with a galaxy distantly cutting through the background](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2023/03/032723_bdh_habitable-exomoons_feat.jpg?fit=1030%2C580&ssl=1)
Rogue planets (one illustrated) wander the galaxy alone rather than orbit a star. Such a planet’s gravitational action could create conditions for life to emerge on a tagalong moon, new research suggests.
Interpott.nrw/Wikimedia Commons (CC BY-SA 4.0)