a complete hydrogen of the space on space 's mud / itself conduct 0 / zero twilight
vast_majority_of_universe is empty_space. space is vast_vaccum_of_emptiness. space has zero_pressure null_space is mathematical_space. civil_twilight is twilight. void is space. astronomical_twilight is twilight. deep_space is outer_space. absolute_space is space. nautical_twilight is twilight.