Definitions

1. noun

a sudden and catastrophic collapse or failure of a planetary ecosystem or environment, often caused by human activities or natural disasters.

“The team of scientists studied the effects of climate change on the planet, searching for signs of an impending earthfall.”

2. noun

a planet or world that has undergone a catastrophic collapse or failure of its ecosystem.

“The remote earthfall on the distant planet was detected by astronomers using advanced telescopes.”