Considering both longevity and luminosity, which of these stars would be the most likely candidate for seeking extraterrestrial intelligence?
A) 61 Cygni, a K2 main- sequence star
B) Barnard's star, a M5 dwarf
C) Spica, a B3 main- sequence star
D) Antares, a M3 supergiant
E) Sirius B, a white dwarf

Question

Quizplus · Accepted Answer

61 Cygni, a K2 main-sequence star, is the most likely candidate because K-type stars have long lifespans and stable luminosities, providing a stable environment for life to potentially develop.

Considering Both Longevity and Luminosity, Which of These Stars Would