Earth

The ancient question of how life began on Earth may have an answer that lies not in our planet's primordial oceans, but in the vast expanse of space itself. Recent scientific discoveries are breathing new life into panspermia, the controversial yet increasingly credible theory that life's building blocks, or even life itself, arrived on Earth from the cosmos. New analysis of asteroid rocks brought back to Earth by Japanese and NASA-led space missions reveals the presence of amino acids, carbon, ammonia, salts, and the basic constituents of DNA and RNA, according to The Week. These findings suggest that the same building blocks, and perhaps even primitive microbial life, could have been delivered to Earth on meteorites, asteroids, or comets billions