All concepts 
Narrative · Motif

Insignificance

An atmospheric mood of existential dread stemming from humanity's minuscule scale, powerlessness, and vulnerability within a vast, indifferent universe.

The chilling realization of humanity's utter insignificance in the face of an immense, indifferent cosmos. The feeling of being a tiny, fragile speck lost in an unfathomable void, where our struggles and existence hold no inherent meaning.

Books

ItStephen King
DuneFrank Herbert
Pet SemataryStephen King
The Green MileStephen King
Life of PiYann Martel
House of LeavesMark Z. Danielewski
Parable of the SowerOctavia E. Butler
CellStephen King
HyperionDan Simmons
The Left Hand of DarknessUrsula K. Le Guin
KindredOctavia E. Butler
AnnihilationJeff VanderMeer
Rendezvous with RamaArthur C. Clarke
PiranesiSusanna Clarke
SolarisStanislaw Lem
Childhood's EndArthur C. Clarke
DesperationStephen King
Gravity's RainbowThomas Pynchon
God Emperor of DuneFrank Herbert
Speaker for the DeadOrson Scott Card
A Monster CallsPatrick Ness
BlindsightPeter Watts
The OverstoryRichard Powers
Heretics of DuneFrank Herbert
White NoiseDon DeLillo
PreyMichael Crichton
The MistStephen King
SphereMichael Crichton
GatewayFrederik Pohl
The BodyStephen King
Swan SongRobert R. McCammon
To Sleep in a Sea of StarsChristopher Paolini
Perdido Street StationChina Miéville
The SparrowMary Doria Russell
GrendelJohn Gardner
MidnightDean Koontz
Pandora's StarPeter F. Hamilton
Harrow the NinthTamsyn Muir
2666Roberto Bolaño
SeveranceLing Ma
ArmadaErnest Cline
Abaddon's GateJames S. A. Corey
AuthorityJeff VanderMeer
ExileR. A. Salvatore
The DeepNick Cutter
Methuselah's ChildrenRobert A. Heinlein
More Than ThisPatrick Ness

Related

Cosmic DreadDreadNihilisticPensiveRelentless DreadPerson vs SupernaturalMelancholicEtherealAdventurousClaustrophobic