What evidence supports the possibility that life may have come from outside of Earth?
A) Amino acids in a meteorite were found to be a mixture of l- and d-isomers.
B) DNA molecules have been found in meteorites.
C) Other bodies in the solar system have, or once had, oxygen.
D) Other bodies in the solar system have, or once had, long-chain polypeptide molecules.
E) Other bodies in the solar system have gaseous atmospheres.

Question

Quizplus · Accepted Answer

Amino acids found in meteorites, which are a mixture of l- and d-isomers, suggest that some of the basic building blocks of life could have originated from space. This supports the panspermia hypothesis, which proposes that life, or the precursors of life, came to Earth from outer space.

What Evidence Supports the Possibility That Life May Have Come