Extraterrestrial life is defined to be
A) life found beyond the Earth which is based on the same biology and chemistry as life on Earth
B) advanced life forms that have visited the Earth
C) any kind of life found beyond the Earth
D) advanced life found on Earth-like planets around other stars

Question

Quizplus · Accepted Answer

Extraterrestrial life refers to any form of life that is found beyond Earth, regardless of its biology, chemistry, or level of advancement. This includes microbial life, intelligent civilizations, and everything in between. Option A is too restrictive since extraterrestrial life may not necessarily have the same biology and chemistry as life on Earth. Option B is also incorrect since there is no evidence of any advanced life forms visiting Earth, and option D assumes that advanced life can only exist on Earth-like planets, which may not be true.

Extraterrestrial Life Is Defined to Be