title: Earth-sized planet around nearby star is astronomy dream come true.
authors: Alexandra
authors: A
authors: Witze
mesh_terms: D001256:Astronomy; D018559:Exobiology / Q000639:trends; D005118:Extraterrestrial Environment / Q000737:chemistry; D016083:Planets; D013026:Space Flight / Q000379:methods / Q000639:trends; D055609:Stars, Celestial; D014867:Water / Q000032:analysis
chemical_list: D014867:Water