"Earth came early to the party in the evolving universe."

The bulk of habitable planets has yet to be born


Wed, Oct 21st, 2015 11:00 by capnasty NEWS

NASA reports on a theoretical study which indicates that planet Earth was an early achiever in that percentage of planets that have or will become habitable. Reportedly, 92% of those habitable planets we're looking for "have yet to be born."

The researchers say that future Earths are more likely to appear inside giant galaxy clusters and also in dwarf galaxies, which have yet to use up all their gas for building stars and accompanying planetary systems. By contrast, our Milky Way galaxy has used up much more of the gas available for future star formation.

A big advantage to our civilization arising early in the evolution of the universe is our being able to use powerful telescopes like Hubble to trace our lineage from the big bang through the early evolution of galaxies. The observational evidence for the big bang and cosmic evolution, encoded in light and other electromagnetic radiation, will be all but erased away 1 trillion years from now due to the runaway expansion of space. Any far-future civilizations that might arise will be largely clueless as to how or if the universe began and evolved.



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