insignificance

US /ˌɪn.sɪɡˈnɪf.ə.kəns/
UK /ˌɪn.sɪɡˈnɪf.ə.kəns/
1.

sự tầm thường

the fact of being small or not noticeable, and therefore not considered important:

:
Advances in astronomy have reinforced the utter insignificance of Earth on a celestial scale.