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Latest Coronal mass ejection Stories

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2011-08-09 14:55:00

NASA said on Tuesday that the sun unleashed the biggest solar flare in four years. The NOAA GOES satellite measured an X6.9 flare on August 9, 2011 at 3:48 a.m. EDT The bursts of radiation cannot pass through Earth's atmosphere to harm humans on the ground, but it can disrupt GPS and communications signal, according to NASA. "It was a big flare," Joe Kunches, a space scientist with the National Oceanic and Atmospheric Administration (NOAA)'s Space Weather Prediction Center told CBS News....

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2011-08-07 05:30:00

American government scientists are warning users of satellite, telecommunication, and electrical equipment to be prepared for potential disruptions due to the recent occurrence of solar flares in the sun, Reuters reported on Saturday. Earlier last week, three coronal mass ejections (CMEs) were released by the sun following solar flares -- the first on August 2 and two others the following day. The initial CME arrived at Earth on August 4, around 5pm EDT, while the remaining two combined and...

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2011-07-22 05:50:00

Earth's aurorae, or Northern and Southern Lights, provide a dazzling light show to people living in the polar regions. Shimmering curtains of green and red undulate across the sky like a living thing. New research shows that aurorae on distant "hot Jupiters" could be 100-1000 times brighter than Earthly aurorae. They also would ripple from equator to poles (due to the planet's proximity to any stellar eruptions), treating the entire planet to an otherworldly spectacle. "I'd love to get a...

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2011-07-15 08:10:00

Those who study the sun face an unavoidable hurdle in their research "“ their observations must be done from afar. Relying on images and data collected from 90 million miles away, however, makes it tough to measure the invisible magnetic fields sweeping around the sun. Scientists must learn more about these fields because they are crucial to understanding how coronal mass ejections, or CMEs, travel through space -- sometimes toward Earth where they can damage satellites. Now NASA...

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2011-07-12 10:30:00

By Dr. Tony Phillips - Science@NASA On June 7, 2011, Earth-orbiting satellites detected a flash of X-rays coming from the western edge of the solar disk. Registering only "M" (for medium) on the Richter scale of solar flares, the blast at first appeared to be a run-of-the-mill eruption--that is, until researchers looked at the movies. "We'd never seen anything like it," says Alex Young, a solar physicist at the Goddard Space Flight Center. "Half of the sun appeared to be blowing itself to...

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2011-06-08 06:00:00

A NASA space observatory witnessed an unusual solar flare on Tuesday that could cause interference to satellites, communications and power on Earth in the next few days, officials warn. Not since 2006 has an eruption of this magnitude been seen reports the National Weather Service. A statement by NASA's solar dynamics observatory says, "The sun unleashed an M-2 (medium-sized) solar flare with a substantial coronal mass ejection (CME) on June 7 that is visually spectacular." "The large cloud...

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2011-04-20 10:09:54

Researchers at the University of Central Lancashire studied the largest solar flare recorded in nearly five years. The solar eruption in February was caused by five rotating sunspots working in concert, BBC News reports. Solar flares are eruptions on the surface of the sun which begin as concentrated magnetic fields and are visible as sunspots. As the magnetic fields build up, they twist and erupt, releasing vast amounts of heat, light and radiation."Twisting the Sun's magnetic field is like...

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2011-04-19 08:30:32

The largest disturbances to the Earth's geomagnetic environment occur when it is buffeted by solar material hurled in our direction by explosive changes in the Sun's atmosphere. These Coronal Mass Ejections or CMEs contain approximately a billion tons of ionized gas or plasma and can have a dramatic and damaging impact on everything from satellites to power grids. Now a team of scientists have used two spacecraft to study these events in unprecedented detail. Graduate student Anthony Williams...

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2011-04-15 09:05:00

By Dr. Tony Phillips - Science@NASA If you've ever stood in front of a hot stove, watching a pot of water and waiting impatiently for it to boil, you know what it feels like to be a solar physicist. Back in 2008, the solar cycle plunged into the deepest minimum in nearly a century. Sunspots all but vanished, solar flares subsided, and the sun was eerily quiet. "Ever since, we've been waiting for solar activity to pick up," says Richard Fisher, head of the Heliophysics Division at NASA...

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2011-02-18 05:55:00

A surge of charged plasma particles from a massive solar eruption has brushed off the Earth's northern pole, producing auroras and disrupting some radio communications, according to NASA scientists. However, the Earth appears to have dodged a widespread geomagnetic storm, with the effects confined to the northern latitudes, possibly as far south as Canada and Norway. "There can be sporadic outages based on particular small-scale events," said Dean Persnell, project scientist at NASA's Solar...


Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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