4 ms·

What makes them inhospitable? Tidal locking?

• shagie 3y ago
  There's also the possibility of super flares from red dwarves. https://science.nasa.gov/missions/hubble/superflares-from-young-red-dwarf-stars-imperil-planets/ https://science.nasa.gov/missions/hubble/superflares-from-yo... https://earthsky.org/space/red-dwarf-stars-superflares-red-dwarf-planets-habitability/ https://earthsky.org/space/red-dwarf-stars-superflares-red-d... https://www.space.com/red-dwarfs-activity-bad-news-alien-life https://www.space.com/red-dwarfs-activity-bad-news-alien-lif... https://interestingengineering.com/science/red-dwarfs-superflares-strip-life-away https://interestingengineering.com/science/red-dwarfs-superf... From the last one: > The magnetic fields' arrangement and intensity are responsible for areas of intense activity on the solar surface. For our Sun, these areas appear darker and are called sunspots, which have been found to occur in areas where solar flares are released. > Solar flares from red dwarfs previously measured can be 100-1,000 times more potent than those released by our Sun. In 2019, Proxima Centauri, a red dwarf, let out a flare 14,000 times brighter than its pre-flare brightness. > Solar flares are sometimes followed by hot plasma sent out from the star called coronal mass ejections (CMEs). Its scorching temperatures can blow strip away the atmospheres of planets and even boil away liquid water from the planet's surface, reducing the likelihood of it hosting life. (Tangent to the tangent - https://youtu.be/FF_e5eYgJ3Y https://youtu.be/FF_e5eYgJ3Y is a neat video - Close Encounter with a CME (Coronal Mass Ejection) :: On Sept. 5, 2022, NASA's Parker Solar Probe was about to make its 13th close approach to the Sun when a coronal mass ejection (CME) -- a powerful explosion of magnetic fields and plasma -- erupted right in front of it. ... )