what type of event will most likely destroy the earth completely?

Question

the sun will die someday and the earth will go with it as well, or two galaxies collide, or maybe us.....what way will likely happen when earth meets its end?

Answer 1

WAR

Answer 2

If you mean total destruction of earth, I would have to say when the sun expands and consumes it. That would be total. If an asteroid hits it, then it would be catastrophic to the surface and it's inhabitants, but the earth would survive. If it were hit with another world, as scientists have speculated has happened in the past, It would reform entirely different than it is now but still survive. I guess there are all kinds of scenarios, but the sun in it's final days would surly be it's end. Scientist say this will happen approximately 4 1/2 billion years in the future. The earth is made of galactic debris from stars that have exploded in the far past, so this would be a fitting demise and maybe a new birth!

Answer 3

I think it will be more insidious than one event.

When we look at all the species on earth and the timespan of there evolution, a natural balance has been brought about through disease, predators, environment. Man is a relevant newcomer and so is not subject yet to the full power of this natural balance. Our population has expanded to plague like quantity (as viewed by other species).

We are intrinsically linked to this system, there is just a time lag before the system catches up and controls our numbers.

At this very moment some disease, predator, virus, environmental containment is brewing in the background awaiting the perfect storm of events to show itself.

I believe that it is no coincidence that the place man first developed seems to be the hardest place to survive.

so my answer is that a series of events over time will send humans to the scrapheap of evolution, unless we find new habitats in the next few thousand years.

Answer 4

A collision between galaxies will have little effect on the Earth. Galaxies are overwhelmingly composed of empty space. There will be very few collisions between stars. A galactic collision could, however, fling our solar system out of the galaxy, though the entire event would likely take millions of years.

A more likely astronomical event is a meteor or comet impact from one of the many asteroids or comets that orbit the Sun. A large enough object could easily wipe out humanity.

Answer 5

Yep, that first one, the sun is going to expand.
About all humans could do it is end life (if that) the bulk of the iron and rock the earth is made of wouldn't even notice what we do.
Also, an asteroid that would have much permanent effect on the bulk of the earth is unlikely, it might shake it up some, and blow off the atmosphere (bad for us), but "destruction" might be an over statement.

Answer 6

As you said, when the Sun uses up its fuel it will Nova and take the earth out during the expansion in approximately 10 million years.

Answer 7

Most likely, the election of Hillary Clinton
or Barack Obama as President of the USA
in November of 2008 will cast the die for
destruction of the Earth as we know it today.

Answer 8

Ophrah loses all her money
Somehow,someway,Bush becomes re-elected
Brows win a Super Bowl
Indians win a World Series
The View is still on the air
New KIDS on the Block start touring
Weather men acctually get the weather right

Answer 9

Maybe an asteroid hit, a nuclear war or the burning of sun into nova.

Answer 10

Well it nearly did already happen, it was called Chernobyl. The fuel store could have removed half of the Earth, course no one says anything it's all too scary.

Answer 11

Romulan Invasion.