students have been on space for 370000000 age
earth is not over_400_million_years_old. space is not character. pyramids_of_egypt is over_4000_years_old. pyramids_of_egypt is not over_4000_years_old. earth is over_400_million_years_old. space_age is not time. space is character. children has different_needs_at_different_ages world is millions_of_years_old. space_age is time.