when will the earth come to its end?

Answer 1

The Sun does not have enough mass to explode as a supernova. Instead, in 4-5 billion years, it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up. Helium fusion will begin when the core temperature reaches around 100 MK, and will produce carbon and oxygen. While it is likely that the expansion of the outer layers of the Sun will reach the current position of Earth's orbit, recent research suggests that mass lost from the Sun earlier in its red giant phase will cause the Earth's orbit to move further out, preventing it from being engulfed. However, Earth's water will be boiled away and most of its atmosphere will escape into space.

Answer 2

What the hell is up with these answers, lets take a SCIENTIFIC look since this is the physics area:

- Earth's fate is linked with that of the sun.
- The sun's current nuclear reactions primarily convert hydrogen to helium, releasing heat and light in the process.
- However there is a finite amount of hydrogen available.
- Currently the sun is midway through its life cycle, it has between 4-5 billion yrs to go before it swells to form a red giant.
- By then the intense energy released by the sun would have stripped away earth's atmosphere and boiled away its oceans, however the planet may still remain as the decrease in the sun's mass weaken's its gravitational field and the earth's orbit is forced outwards.
- Eventually the sun will slowly cool and fade as a white dwarf, not nearly luminous enough to sustain any new life on earth.

- We know this as stars similar to the sun have been studied in depth to deduce the life cycle.

The other 'theories' are speculative, and weak in my opinion.
- Mass extinction event (meteors etc) could mean the end of life, but you'll need something bigger than any known meteor to destroy the earth completely,
- Predicting an exact date is daft, the future is unknown, it is unreliable, and how many of these doomsdays have come and gone?
- Earth cannot remain forever, because the universe is dynamic, everything is changing all the time, the sun's fuel is finite, and the earth cannot 'live' without the sun.

Answer 3

The sun with engulf the earth in 4-5 billion year, true. LIfe will perish long before that, though, in as little as 200 million years or so due to the sun becoming too hot. The sun does not swell up suddenly one day and it's all over; it's a gradual process. The only thing that has been keeping water between freezing and boiling for the last few billion years is the fact that CO2 levels, over the long term, have been coincidentally decreasing due to geological processes, off-setting the sun's heat increase (recall, CO2 is a greenhouse gas). Unfortunately, CO2 is almost gone now, relatively speaking. Present squabbles over it increasing pertain only to quibbles over a few degrees here and there for the next several hundred years (a flash in the pan). Total extinction (on multicelled life, at least) in hundreds of millions of years would involve several tens of degrees rise. See ref.

Of course, this all refers the the natural chain of events. If our decendents (or some other animal's decendents) place a sunshade in orbit or, better yet, move the earth to another orbit, all bets are off.

Answer 4

No,

Nostradamus say the end of the earth is 6 billion years when the sun will fade away its light

From the Bible it says

and there will war and rumors of wars
Nations will fight against nation
brother will fight against brother
... .
But the end is not yet
For the lightning striket from the east so is in the west
so is the coming of the son of man

Answer 5

April 13, 2036 by a meteor crashing into earth.

Answer 6

December 21st, 2012

Answer 7

When the sun becomes a Red Giant, expands and consumes it.
.

Answer 8

Never. But the worldly system of things is scheduled to be put out of its misery very soon, perhaps in our lifetimes.

Answer 9

The second Tuesday of next week.

Answer 10

No body knows, and there is no why of knowing, only god himself knows.