Tagged with 'black holes maya mayan hawking supernova space universe ufo aliens creation solar system 2012 comets asteroids cosmos cosmic stars galaxies planets nobel mars sun moon earth greeks adam eve bible nasa doomsday hubble'

Time is flying by on this busy, crowded planet as life changes and evolves from second to second. And yet the arc of human lifespan is getting longer: 65 years is the global average way up from just 20 in the Stone Age. Modern science, however, provides a humbling perspective.