Only 4.2 ly away[0]! That'd be like Three Body Problem-tier convenience. : D Also, class M star: >In 2017, Nasa scientists used computer models to show that i

Only 4.2 ly away[0]! That'd be like Three Body Problem-tier convenience. : D Also, class M star: >In 2017, Nasa scientists used computer models to show that if Proxima b had an Earth-like atmosphere, it could easily be stripped away by the intense radiation and solar flares unleashed by its parent star. Under this battering, the 4bn-year-old planet could have lost its entire atmosphere in 100m years. Yep. They burn the longest, but they don't burn cleanly. They "sputter", unleashing huge flares that can erode atmospheres, and their luminosities can fluctuate randomly. Imagine if the Earth was plunged into a 13-year-long superwinter because the Sun decided to be a bit less bright for a while. (In the Three Body Problem books, a planet there has wild climatic instability owing to the chaotic orbit around Alpha Centauri's three stars.) 0: https://en.wikipedia.org/wiki/Proxima_Centauri https://en.wikipedia.org/wiki/Proxima_Centauri