Based on observations recorded by Hubble, researchers learned that Andromeda seems to be more highly populated with younger stars and unusual features like coherent streams of stars, which implies it has a more active recent star-formation and interaction history than the Milky Way.
--Amaris Encinas reporting on new Andromeda image from this PHAST study.
(15:4.7) There are not many sun-forming nebulae active in Orvonton at the present time, though Andromeda, which is outside the inhabited superuniverse, is very active.
