inhibitor have been on space for 400000000 age
earth is over_400_million_years_old. space has zero_pressure age is period_of_existence. world is millions_of_years_old. plutonium_239 has half_life_of_24,390_years space_medicine is medicine. plutonium_239 has half_life_of_about_24,000_years pyramids_of_egypt is over_4000_years_old. space is time. space_age is time.