AP BIOLOGY

Detailed explanation-1: -The panspermia theory argues that life is originated in space, in spatial ices, and continuously distributed to the planets by comets and meteorites.

Detailed explanation-2: -The panspermia hypothesis suggests life began on Earth when the “seeds” of life, already present in the universe, arrived here from space. How did these seeds, or microbes, get here? Proposed transport methods include meteorites, comets, and spacecraft.

Detailed explanation-3: -Panspermia proposes (for example) that microscopic lifeforms which can survive the effects of space (such as extremophiles) can become trapped in debris ejected into space after collisions between planets and small Solar System bodies that harbor life.

Detailed explanation-4: -A handful of scientists argue that life didn’t begin on Earth, but elsewhere in the universe, and that it … was carried here on meteoroids and other space bodies. The origin could be somewhere nearby, like Mars, or light years away. The idea is called “panspermia”.