Can Life Develop in the Expanded Habitable Zones around Red Giant Stars?

  title={Can Life Develop in the Expanded Habitable Zones around Red Giant Stars?},
  author={Bruno Lopez and Jean Schneider and William C. Danchi},
  journal={The Astrophysical Journal},
  pages={974 - 985}
We present some new ideas about the possibility of life developing around subgiant and red giant stars. Our study concerns the temporal evolution of the habitable zone. The distance between the star and the habitable zone, as well as its width, increases with time as a consequence of stellar evolution. The habitable zone moves outward after the star leaves the main sequence, sweeping a wider range of distances from the star until the star reaches the tip of the asymptotic giant branch… 

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