In 5.5 billion years from now, when the sun explodes.

Be 100% sure that nobody knows.

2012?

About 4 Billon years time when the nuclear fusion of the sun ends.

In about 5 billion years when the Earth is engulfed inside the expanding Sun.

Very long time after I am gone. I think the development of the world you cannot count in millions of years.

Right now. No right now.Ok right now.any minute now ..etc

it will end when the fat lady loses what...then sings

According to http://www.newscientist.com/article/dn13369 , it will end in over 7 billion years from now. "In a few billion years, the Sun will fuse the last of its hydrogen into helium, turn into a red giant and expand to 250 times its current size. At first, the Sun's loss of mass will loosen its gravitational pull on Earth, which will allow the planet to migrate to a wider orbit about 7.6 billion years from now. This process has led some to speculate that the Earth might escape destruction - but survival now seems impossible, says Peter Schröder of the University of Guanajuato in Mexico and Robert Smith of the University of Sussex in the UK. They created the most detailed model to date of the Sun's transition to a red giant, based on observations of six nearby red giant stars. Sure enough, they found that Earth's orbit will widen at first. But Earth will also induce a 'tidal bulge' on the Sun's surface, with its own gravitational pull. The bulge will lag just behind the Earth in its orbit, slowing it down enough to drag it to a fiery demise."

Oneday..:)

DOOMS DAY!

When there's a cataclysmic collision, or a significant solar transition. When humans will cease to exist is anyone's guess, as there could be any number of causes, foreseen and not.

I'm going with over 7 billion years from now based on what I've read from accredited astronomers. I however think the human race will never end since in 7 billion years I bet we would of inhabited a younger earthlike planet.

On a Friday, to ruin our weekend plans.

When the prophecies have been fullfilled...and that means soon....ALL of them Have come true but 2. The rising up of THE Antichrist. and Christs Return

Not to worry, it won't happen in our life time. +3

The world will end when the sun is reaching the point in its life cycle at which the planet cannot survive and will be destroyed. By then, however, there will be no human beings left here anyway, because well before the planet's actual destruction, life will cease to be supported by the sun, which will have grown vastly brighter and will cause the earth to become far too hot for life to exist on it. That's going to happen about 3.5 billion years from now.

The sun will end in approx 4.5 Billion years. The earth will end then. Life on earth as we know it will be done in about 400 Million years - because the earth will drift out of the Habitable Zone by then.

not any time soon and is no reason for it to end ..its been here for thousands of years and it will continue on and on

The end of the world is relative to each person at the moment of their death. In the physical sense, there will be an end to this world according to the scripture - and a new one will be build upon which mankind will live. The passage of time only affects those who use it as a form of measurement - it will be irrelevant after this world is destroyed and the new one created. The moment each person dies, he is unaware of the concept of time - the next moment of conscious perception is in the rebuilt world after this world has been destroyed. Thus, he could spend hundreds or even thousands of years buried in the ground and not know it - for him, it would only be for a moment. This world could still exist for thousands of years. After it's destroyed, there will be no concept of time - eternity is endless.

In the future. . . . . Seriously, though probably long before the Sun does whatever cosmologists imagine it's going to do. (There are significant flaws in current stellar evolution theory that have not yet been satisfactorily explained. These flaws are so fundamental that we can't expect the Sun to act - over billions of years - in the way that current cosmologists theorize, even though those theories are based on the best available data and scientific understanding currently available.) Also: wonder what you mean by "end". * End of all human life? We might do that to ourselves with nuclear war. * Global extinction event similar to the dinosaurs? Expect that to happen again when the Solar System once again moves through the galactic ecliptic. This happens about every 31.5 million years (according to one web site), which means that our Solar System "runs through" the region with the most "stuff in the way" every 31.5 million years. Look at this chart. . . https://en.wikipedia.org/wiki/List_of_extinction_events . . Skipping the first four rows, notice how the time between extinction events is repeatedly around 30 million years? One theory suggests that because about every 30 million years our Solar System runs through the galactic plane, where there's a lot more stuff floating around (from the point of view of the galaxy) than there is where we are NOW, every 30 million years or so some big hunks of that stuff get caught by the Sun's gravity and one or more of them end up clobbering Earth. (Note: probably the other planets get clobbered a lot as well, especially the larger ones.) . . . . SO [finally answering the question] IF we don't have sufficient technology to avoid such a disaster we can expect a higher-life-form-exterminating event sometime within the next 3 million years. Yes, not billion. MILLION.