Most Life That Evolved On Other Planets Died Off Long Ago

If life on a planet does not evolve fast enough it doesn't get powerful enough before natural changes in climate wipe it out. Australian researchers present the Gaian Bottleneck hypothesis: "The mystery of why we haven't yet found signs of aliens may have less to do with the likelihood of the origin of life or intelligence and have more to do with the rarity of the rapid emergence of biological regulation of feedback cycles on planetary surfaces," he said. Wet, rocky planets, with the ingredients and energy sources required for life seem to be ubiquitous, however, as physicist Enrico Fermi pointed out in 1950, no signs of surviving extra-terrestrial life have been found. A plausible solution to Fermi's paradox, say...
Source: FuturePundit - Category: Research Authors: Source Type: blogs