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Nasa Scientists : End of The World

Dec. 21, 2012, won't be the end of the world as we know, however, it
will be another winter solstice.
Contrary to some of the common beliefs out there, the claims behind
the end of the world quickly unravel when pinned down to the 2012
timeline.
Below, NASA Scientists answer questions on the following 2012 topics:

Question (Q): Are there any threats to the Earth in 2012? Many
Internet websites say the world will end in December 2012.
Answer (A): The world will not end in 2012. Our planet has been
getting along just fine for more than 4 billion years, and credible
scientists worldwide know of no threat associated with 2012.
Q: What is the origin of the prediction that the world will end in 2012?
A: The story started with claims that Nibiru, a supposed planet
discovered by the Sumerians, is headed toward Earth. This catastrophe
was initially predicted for May 2003, but when nothing happened the
doomsday date was moved forward to December 2012 and linked to the end
of one of the cycles in the ancient Mayancalendar at the winter
solstice in 2012 -- hence the predicted doomsday date of December 21,
2012.
Q: Does the Mayan calendar end in December 2012?
A: Just as the calendar you have on your kitchen wall does not cease
to exist after December 31, the Mayan calendar does not cease to exist
on December 21, 2012. This date is the end of the Mayan long-count
period but then -- just as your calendar begins again on January 1 --
another long-count period begins for the Mayan calendar.
Q: Is NASA predicting a "total blackout" of Earth on Dec. 23 to Dec. 25?
A: Absolutely not. Neither NASA nor any other scientific organization
is predicting such a blackout. The false reports on this issue claim
that some sort of "alignment of the Universe" will cause a blackout.
There is no such alignment(see next question). Some versions of this
rumor cite an emergency preparedness message from NASA Administrator
Charles Bolden. This is simply a message encouraging people to be
prepared for emergencies, recorded as part of a wider government
preparedness campaign. It never mentions a blackout.
Q: Could planets align in a way that impacts Earth?
A: There are no planetary alignments in the nextfew decades and even
if these alignments were to occur, their effects on the Earth would be
negligible. One major alignment occurred in 1962, for example, and two
others happened during 1982 and 2000. Each December the Earth and sun
align with the approximate center of the Milky Way Galaxy but that is
an annual eventof no consequence.
Q: Is there a planet or brown dwarf called Nibiru or Planet X or Eris
that is approaching the Earth and threatening our planet with
widespread destruction?
A: Nibiru and other stories about wayward planets are an Internet
hoax. There is no factual basis for these claims. If Nibiru or Planet
X were real and headed for an encounter with the Earth in 2012,
astronomers would have been tracking it for at least the past decade,
and it would be visible by now to the naked eye. Obviously, it does
not exist. Eris is real, but it is a dwarf planetsimilar to Pluto that
will remain in the outer solar system; the closest it can come to
Earth is about 4 billion miles.
Q: What is the polar shift theory? Is it true that the Earth's crust
does a 180-degree rotation around the core in a matter of days if not
hours?
A: A reversal in the rotation of Earth is impossible. There are slow
movements of the continents (for example Antarctica was near the
equator hundreds of millions of years ago), but that is irrelevant to
claims of reversal of the rotational poles. However, many of the
disaster websites pull a bait-and-switch to fool people. They claim a
relationship between the rotation and the magnetic polarity of Earth,
which does change irregularly, with a magnetic reversal taking place
every 400,000 years on average. As far as we know, such a magnetic
reversal doesn't cause any harm to life on Earth. Scientists believe a
magnetic reversal is very unlikely to happen in the next few
millennia.Q: Is the Earth in danger of being hit by a meteor in 2012?
A: The Earth has always been subject to impacts by comets and
asteroids, although big hits are very rare. The last big impact was 65
million years ago, and that led to the extinction of the dinosaurs.
Today NASA astronomers are carrying out a survey called the Spaceguard
Survey to find any large near-Earth asteroids long before they hit. We
have already determined that there are no threatening asteroids as
large as the one that killed the dinosaurs. All this work is done
openly with the discoveries posted every day on the NASA Near-Earth
Object Program Office website , so you can see for yourself that
nothingis predicted to hit in 2012.
Q: How do NASA scientists feel about claims of the world ending in 2012?
A: For any claims of disaster or dramatic changesin 2012, where is the
science? Where is the evidence? There is none, and for all the
fictional assertions, whether they are made in books, movies,
documentaries or over the Internet, we cannot change that simple fact.
There is no credible evidence for any of the assertions madein support
of unusual events taking place in December 2012.
Q: Is there a danger from giant solar storms predicted for 2012?
A: Solar activity has a regular cycle, with peaks approximately every
11 years. Near these activity peaks, solar flares can cause some
interruption of satellite communications, although engineers are
learning how to build electronics that are protected against most
solar storms. But there is no special risk associated with 2012. The
next solar maximum will occur in the 2012-2014 time frame and is
predicted to bean average solar cycle, no different than previous
cycles throughout history.


it is not sure that December 21-2012 end of The World day .. But
must remember it can be your end of The World day and remember the
judgment day ......
Source : http://www.nasa.gov/topics/earth/features/2012.html
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