Unplan-etary Destruction

This is the spontaneous destruction of an entire planet, and the lifeforms currently on it.

Unplan-etary Destruction can be predicted using simple observation. If the planet is vibrating, in a way that is noticeable from the planet's outer bounds, you have 1.5 weeks to get off the planet.

Unplan-etary Destruction comes in phases:

Phase 1: Vibration

We do not know what causes the vibrations, since any information is annihilated upon the planet explosion.

Phase 2: Earthquakes

Due to the planet's vibration, earthquakes happen causing cracks and chasms to appear in the planet's crust.

Phase 3: Gassing

The planet begins releasing toxic gases from the cracks and chasms, like Sulfur Dioxide, Fluorine and Nitrogen Dioxide. It is not known from where these gases come from.

Phase 4: Corrosion

The toxic gases dissolve in rainwater, creating Sulfurous Acid (H2SO3), Hydrofluoric Acid (HF) and Nitric Acid (HNO3), which dissolve any and every substance they touch, including rock, and biological matter.

Phase 5: Fogging

Through the cracks in Phase 2, Astatine powder beings to eject itself into the atmosphere at an extremely high rate, creating a greyish fog, covering the planet in a thick layer of explosive, unstable powder. The powder is so fine, that it seeps through the rock, into each and every gap in the crust.

Phase 6: Settling

As the fog begins to settle, everything stops. The planet closes its cracks and chasms. The planet is now a wasteland, with no remaining lifeforms upon it's surface. Things being to calm down, but this is merely the calm before the storm/explosion.

Phase 7: Destruction

The planet performs a small chemical reaction in its core, setting off the Astatine powder, making everything explode, turning the planet into a mere cloud of dust and toxic gas.