Exoplanets with a permanent day side may sometimes flip into night


A planet, one side covered in water, the other in ice

An illustration of the exoplanet TRAPPIST-1f, which seems to be tidally locked

NASA/JPL-Caltech

Some alien planets regarded as locked in place round their father or mother star may very well be capable to rotate, creating steady climates lengthy sufficient for potential life to come up – so long as any inhabitants didn’t thoughts sudden disruption.

Many exoplanets that carefully orbit crimson dwarf stars, corresponding to within the TRAPPIST-1 system, are regarded as tidally locked by their star’s gravity, so the planets have everlasting day and evening sides which might be extraordinarily scorching or chilly. …

Article amended on 17 April 2023

We’ve got corrected the kind of star within the TRAPPIST-1 system