Original: Some time in the next 1.5 billionâ "4.5 billion years, the axial tilt of the Earth may begin to undergo chaotic variations, with changes in the axial tilt of up to 90 Â.
Simplified: Some time in the next 1.5 billionâ "4.5 billion years, the axis's tilt may begin to change into bad versions, with changes in the axis's tilt of up to 90 Â.