How will be the end of the earth?

Answer 1

Will it be fire or flood? Or will we freeze into an ice-covered globe? There are a couple of scenarios.
1) Collision. These are inevitable. It is believed that a major collision is what caused the moon. It had to have come close to destroying the planet. And there would be absolutely nothing we could do to prevent a collision with a body large enough to destroy our planet. Fortunately, these are extremely rare. Far more common, but still extremely rare, are collisions that cause global catastrophe without destroying the planet. Earth may have been subjected to several of these in the last 4 billion years. It is believed that this kind of collision is what caused the mass extinctions, including the dinosaurs, 65 million years ago.

2) Then there is the end which is expected in about 5 or 6 billion years. That is when the sun will become a red giant. This we know with much greater accuracy than the collision scenario. The planet will be engulfed by the tenuous outer region of the sun as it expands and cools. the planet will not be completely destroyed, but it will be left charred with no atmosphere or liquid water. No life can survive it.

3) In the last few years, we have realized that we and the Andromeda galaxy are on a high speed collision course. This will cause utter chaos in the galactic structure, but direct star collisions will be rare. The greatest risk in this collision will be the effect of the gravity of so many stars streaming through our galaxy. Many stars will be thrown out into intergalactic space. Many planets will be ripped from their planetary orbits. If this happens to the earth, we will eventually freeze without our sun. This collision is expected in 250 million years, I think.

So my advice is: finish writing that term paper and keep practicing safe sex. This planet is, in all likelihood, going to be around for a long, long time.

Note: the asteroid referred to, above me, is not expected to hit the earth. If it does, it will be by far the worst disaster in human history, but it would not wipe us out and certainly will not destroy the planet. And all those things other people mentioned could happen and our species, along with possibly hundreds of thousands of others woul be in big trouble. But as I said, nothing that we could do can destroy the planet. All the life on it, maybe, but not the planet.

Claire, it is far more likely that you will die falling off a bridge. As for our descendants, we may go thousands of generations before any big collision. And the other two are so far in the future as to not even be worth considering. The problems of our population and in particular global warming or nuclear war pose the greatest risk to our species over the next century or two.

Answer 2

The way sea levels are rising, huge floods are likely to wipe out land masses unless something is done to control it.

But the Earth will not end because of floods, as aquatic life will still abound.

Asteroid impact will also not destroy Earth completely.

Neither will nukes, though it might spell the end of human civilization.

So, in all probability, going on a scientific basis, our planet will continue to exist for billions of years until the Sun runs out of energy.

Answer 3

Many possibilities.

All the major countries with nukes will blow each other up destroying the entire earth.

Global warming will melt the polar ice caps and the world will drown.

We will live for a very long time until the sun eventually explodes but by this time we would have left the earth and explored other planets.

Answer 4

The fate of the earth is tied to the fate of our sun.

Around 5 billion years from now, the sun will run out of hydrogen in its core. When this happens, nuclear fusion in the core will stop, and the core will begin collapsing under the influence of gravity. This collapse will cause the core temperature to increase, until temperatures and pressures are high enough to begin helium burning.

This temperature increase will also cause the sun's outer layers to expand enormously, and our sun will become a red giant. It is likely that the sun will expand to a radius of around 100 million miles (160 million km), swallowing up the planets Mercury, Venus, and Earth.

Eventually, the sun too will die. Helium burning is accompanied by hydrogen burning in an expanding shell. The hydrogen burning is very unstable, and the sun's radius and temperature will fluctuate. Each fluctuation will carry away some of the sun's outer layers, resulting in a planetary nebula. Eventually, most of the sun's mass will be lost in this manner and all fusion will stop, leaving behind a white dwarf.

Answer 5

High water and lots of pollution with nothing safe to eat or drink unless we make it to 2012 or 2036 and get whacked by that asteroid and then it will be all of the above with no sun or food of any type.

Answer 6

1) The sun swallowing up the earth. (Will happen NOT in our lifetime)

2) Somehow a "UNEXPECTED" meteor hits earth (has happened before)

3) Global warming (self evident)

4) human stupidity (highly likely)

5) Aliens attack us (which i doubt)


and the LIST goes on.......

Answer 7

i think an earth bound asteroid/comet then worldwide super-volcanic eruptions.

Answer 8

the sun is supposed to explode. but i'm sure that an asteroid will hit and kill us all like the dinasours.

Answer 9

after reading all these scary scary suggestions im now officially petrified