Alien First Contact
Alien Invasion
Black Hole Collision
Black Hole Merger
Celestial Cataclysm
Cosmic Apocalypse
Cosmic Background Radiation
Cosmic Conflux
Cosmic Density Fluctuations
Cosmic Inflation
Cosmic Magnetic Fields
Cosmic Magnetic Reconnection
Cosmic Microwave Background
Cosmic Nexus
Cosmic Phase Transition
Cosmic Strings
Cosmic Topological Defects
Cosmic Web
Dark Energy Anomaly
Dark Matter Formation
Exotic Particle Storm
Galactic Tide Pool
Galaxy Collision
Gamma Ray Burst
Gravitational Lensing
Gravitational Vortex
Gravity Wave Ripple
Gravity Well Collapse
High Energy Cosmic Rays
Hypernova
Interdimensional Portal
Interdimensional Rift
Intergalactic War
Interstellar Paradox
Nebula Explosion
Nebula Formation
Nebular Reconvergence
Nebular Resonance
Planet-Killer Asteroid Impact
Quantum Fluctuation
Quantum Singularity
Quasar Accretion
Reality-Warping Event
Singularity Overload
Singularity Swarm
Space-Time Anomaly
Star Formation
Stellar Carving
Stellar Convergence
Supernova
Tachyon Burst
Warp Disruption
Wormhole Nexus
Wormhole opening