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Thursday, December 6, 2012
Saturday, December 1, 2012
Beyond 2012: Why the World Won't End
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:
› View larger
A 'Blue Marble' image of the Earth taken from the Visible/Infrared Imager Radiometer Suite (VIIRS) instrument aboard NASA's Suomi NPP satellite. This composite image uses a number of swaths of the Earth's surface taken on January 4, 2012. Credit: NASA/NOAA/GSFC/Suomi NPP/VIIRS/Norman Kuring
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.
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 Mayan calendar at the
winter solstice in 2012 -- hence the predicted doomsday date of December 21,
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.
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.
›Watch the Video
›Watch the Video
A: There are no
planetary alignments in the next few 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 event of no consequence.
› More about alignment
› More about alignment
"There apparently is a great deal of interest in celestial bodies, and their locations and trajectories at the end of the calendar year 2012. Now, I for one love a good book or movie as much as the next guy. But the stuff flying around through cyberspace, TV and the movies is not based on science. There is even a fake NASA news release out there..."
- Don Yeomans, NASA senior research scientist
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 planet similar 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.
› More about polar shift
› More about polar shift
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 nothing is
predicted to hit in 2012.
A: For any
claims of disaster or dramatic changes in 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 made
in support of unusual events taking place in December 2012.
› Why you need not fear a supernova
› About super volcanoes
› Why you need not fear a supernova
› About super volcanoes
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 be an average solar cycle, no different than previous
cycles throughout history.
› Video: Solar Storms
› More about solar storms
› Video: Solar Storms
› More about solar storms
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