The likelihood of a ninth planet exiasting on the edge of our solar system seems increasingly certain, according to NASA. The space agency says the evidence is hard to ignore and cites strange influences on the Kuiper belt as the clearest reason yet to suspect the large planet is lurking nearby.
How did life first originate from nothing? This has been the focus of biologists, specifically astrobiologists, and popular theories have included everything from meteorites to seemingly random chemicals to luck. In 1859, Charles Darwin posited that “All organic beings that have lived on Earth could be descended from some primordial form,” in The Origin of Species. His basic idea was that chemical components and energy sources somehow spontaneously generated life in the primordial soup.