MASSIVE SOLAR FLARE RACING TOWARDS EARTH TO BE HERE BY TUESDAY
AUG 3 2010
CLIP FROM BELOW --> "This eruption is directed right at us,"
The earth could be hit by a wave of violent space weather as
early as Tuesday after a massive explosion on the sun, scientists have warned.
The solar fireworks at the weekend were recorded by several satellites,
including Nasa’s new Solar Dynamics Observatory which watched its shock wave
rippling outwards.
Astronomers from all over the world witnessed the huge flare above a giant
sunspot the size of the Earth, which they linked to an even larger eruption
across the surface of Sun.
The explosion, called a coronal mass ejection, was aimed directly towards
Earth, which then sent a “solar tsunami” racing 93 million miles across space.
Images from the SDO hint at a shock wave travelling from the flare into space,
the New Scientist reported.
Experts said the wave of supercharged gas will likely reach the Earth on
Tuesday, when it will buffet the natural magnetic shield protecting Earth.
It is likely to spark spectacular displays of the aurora or northern and
southern lights.
"This eruption is directed right at us," said
Leon Golub, of the Harvard-Smithsonian Center for Astrophysics (CfA).
"It's the first major Earth-directed eruption in quite some time."
Scientists have warned that a really big solar eruption
could destroy satellites and wreck power and communications grids around the
globe if it happened today.
Nasa recently warned that Britain could face widespread power blackouts and be
left without critical communication signals for long periods of time, after
the earth is hit by a once-in-a-generation “space storm”.
The Daily Telegraph disclosed in June that senior space agency scientists
believed the Earth will be hit with unprecedented levels of magnetic energy
from solar flares after the Sun wakes “from a deep slumber” sometime around
2013.
It remains unclear, however, how much damage this latest eruption will cause
the world’s communication tools.
Dr Lucie Green, of the Mullard Space Science Laboratory, Surrey, followed the
flare-ups using Japan's orbiting Hinode telescope.
"What wonderful fireworks the Sun has been producing,” the UK solar expert
said.
“This was a very rare event not one, but two almost simultaneous eruptions
from different locations on the sun were launched toward the Earth.
"These eruptions occur when immense magnetic structures in the solar
atmosphere lose their stability and can no longer be held down by the Sun's
huge gravitational pull. Just like a coiled spring suddenly being released,
they erupt into space.”
She added: "It looks like the first eruption was so large that it changed the
magnetic fields throughout half the Sun's visible atmosphere and provided the
right conditions for the second eruption.
"Both eruptions could be Earth-directed but may be travelling at different
speeds.
“This means we have a very good chance of seeing major and prolonged effects,
such as the northern lights at low latitudes."
A Nasa spokesman was unavailable for comment.
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