There is no real answer to that question, but here are a few theories if you're still wondering:
1. Total existence failure. Nothing happens. Everything just dies.
2. Aliens. I think I'm stating the dumber solutions first.
3. A black hole might swallow up the Earth.
4. An earthquake that swallows up the Earth itself.
5. A meteor crashing into the Earth.
6. Oxygen failure.
These are just a few. You can also take some theories from the dinosaurs. Most of those theories are likely to be theories of the Earth.
Who knows! This is a subject of much debate still.
Its best to clarify the difference between the earth being destroyed and humanity wiped out or dramatically inhibited.
Ways the earth will be physically destroyed:
In about 8 billion years or so, when the sun is a red giant, the inner planets will start to be sucked in, destroying Earth around that period.
Other remote possibilities could be a black hole in the milky way recently discovered to be far bigger than previously imagined.
Some ways humanity could be affected in the future:
* Political/religious or economical problems causing global rioting * Solar flares and blasts
* Extraterrestrial body striking earth * Alien invasion
* Super volcanoes/earthquakes * Other extreme weather phenomena * The sun starting its progression in to the red giant stage, raising the earths temperature and finally incinerating everything. * Polar reversal
According to the Scripture, the earth and the space will be destroyed an replaced with a new earth and new heavens (Space)
The earth will never be destroyed by global warming. Life on earth might be destroyed, if we don't make serious efforts to stop global warming. Venus has temperatures of over 460C (860F) with an atmosphere full of carbon dioxide. The planet still exists, but there is no chance of life.
In about 5 thousand million years time the Earth will be inside the enlarged Sun. At this point it will be destroyed.
because most of the matter that made of early Earth has been destroyed or changed.
Look for the answer between the late cosmos in early spring
It is created at mid-oceanic ridges (divergent boundaries) and it is destroyed at subduction zones (convergent boundary between oceanic crust and continental crust).
No, if the Earth was destroyed by an asteroid we would not be living today.
The Earth's crust is destroyed when subduction occurs.
The Earth is destroyed to make way for a new hyperspace bypass.
If the earth's moon was completely destroyed, there is a possibility that we will no longer experience normal tidal cycles.
Eventually
If earth's moon was destroyed, then we will no longer have normal tide cycles.
The Earth was destroyed by Vogons to make way for a hyperspacial express route.
The Earth is destroyed by the Vogons to make way for a new hyperspace bypass.
The Earth's crust is destroyed when subduction occurs.
it will be destroyed, considering Earth is a planet.
Probably not.
No.