Expanding the habitable zone.
Vogel
G
G
D055580:Astronomical Phenomena; D001256:Astronomy; D001272:Atmosphere; D001419:Bacteria / Q000254:growth & development*; D019443:Cosmic Dust; D018559:Exobiology; D005118:Extraterrestrial Environment; D018543:Minor Planets; D016083:Planets; D014867:Water
D019443:Cosmic Dust; D014867:Water