Archive

Posts Tagged ‘solar cycle 24’

Earth-directed solar X-flare March 11

March 12, 2015 Comments off

earthsky.org

The sun has been relatively quiet, and this is the first X-flare of 2015. It caused a brief radio blackout at some frequencies. Possible aurora alert ahead.

The first X-flare of 2015 from NASA's Solar Dynamics Observatory

A strong Earth-directed X-flare erupted from a large active region on the sun – AR2297 – earlier today. The flare happened on March 11, 2015 at 16:22 UTC (11:22 a.m. CDT). It measured X2 on the Richter Scale of Flares. Spaceweather.com said:

Extreme ultraviolet radiation from the explosion ionized the upper layers of Earth’s atmosphere, causing HF radio fade-outs and other propagation effects on the dayside of our planet. In the red zone of this map, ham radio operators and mariners may have noticed brief but complete blackout conditions at frequencies below 10 MHz.

The disturbance has since subsided.

Spaceweather.com also said that natural radio emissions from the sun indicate a possible coronal mass ejection – CME – emerging from the blast site at speeds exceeding

Read more…

Advertisements

Sun fires warning shot across the bow! Earth directed X Flare

November 6, 2013 Comments off

Sun’s magnetic field flip raises EMP threat

August 8, 2013 Comments off

wnd.com

SunMagnetic

WASHINGTON – The sun is about to flip its magnetic field, at the peak of its 11-year solar cycle or at the half-way point of what scientists call a solar maximum – when it is at its most violent in terms of solar flares and the Earth is most vulnerable to an electromagnetic pulse.

That’s the surge of sun energy that scientists say could in an instant return the developed world to an agrarian society, essentially without any electronics, and leave millions dead.

This mid-way point is expected in about four months – a December/January time frame – putting Earth in a position of greatest vulnerability even as the solar maximum diminishes well into 2014.

Scientists for the National Aeronautics and Space Administration, or NASA, have said the sun will reach its most intense period this year and well into next.

Others have suggested that even until 2020 Earth still could be exposed to solar flares that if they hit Earth directly could knock out the U.S. national grid system and fry electronic components and automated control systems not only in the U.S. but in other industrialized countries.

“It looks like we’re no more than three to four months away from a complete Read more…

Is Our Sun In The Very Early Stages Of Shutting Down?

August 2, 2013 1 comment

thetruthwins.com

The Sun

Something is up with the sun.  It has begun to behave very erratically, and scientists don’t know quite what to make of it.  Sunspot activity appears to be slowing down with each new cycle and absolutely gigantic holes have started to appear in the sun.  At the moment, the sun is approaching the peak of its 11 year cycle, and an increasing number of scientists are becoming concerned about what the next cycle will bring.  If sunspot activity continues to diminish, could the sunspot cycle eventually die altogether?  Is it possible that we could be approaching another ice age?  Even worse, could the increasingly erratic behavior of the sun be an indication that the sun is dying?  Traditionally, scientists have taught that the sun won’t die until billions of years from now, but in recent years astronomers have observed stars similar to our own sun suddenly begin to behave very erratically and then Read more…

Categories: Sun Tags: , ,

Solar Flare Disrupts Radio Waves On Earth

February 5, 2013 Comments off
coronal mass ejection

A solar flare drowned out radio communications on Earth on February 2. The relatively “tiny” sun spot erupted into a moderately sized Class-C coronal mass ejection. The sound of the waves created by the solar flare cloaked radio waves between 28MHz and 21.1 MHz.

The voices going across the impacted radio signals appeared to be “swallowed” by the solar flare, Wired notes. NASA JOVE project radio astronomer Thomas Ashcraft noted how interesting the sound was as the wave from the coronal mass ejection (CME) rolled through.

As previously reported by The Inquisitr, the sun is entering the Read more…

Scientists Expect A Massive Solar Event To Hit By Next Year

January 10, 2013 Comments off

earth-issues.com

It was in January 1994 that two Canadian telecommunications satellites blanked out during a major sunburst while in geosynchronous orbit and communications were disrupted nationwide.

Aurora during a geomagnetic storm that was mos...

While recovery occurred after only a few hours on the first satellite, it took some six months and more than $70 million to recover the second satellite.

Then in January 2005, some 26 United Airlines flights had to be diverted during a space weather storm to non-polar routes – to avoid the prospect of high frequency radio blackouts.

Added were landings and takeoffs, flight time and other factors that elevated fuel consumption and costs. Each route change ended up costing more than $100,000.

Then in February 2011, there was a sun eruption experts described as the largest solar flare in four years. It caused interference in radio communications and global positioning system signals for aircraft traveling long-distances.

While it was a modest outburst, experts say it signaled the beginning of an upcoming Read more…

NASA Scientists Capture Stunning Images of Solar Flares From Sun (Video)

April 17, 2012 1 comment

ibtimes.co.uk

An eruption on April 16, 2012 was captured here by NASA's Solar Dynamics Observatory in the 304 Angstrom wavelength, which is typically colored in red Credit: NASA/SDO/AIA

An eruption on April 16, 2012 was captured here by NASA‘s Solar Dynamics Observatory in the 304 Angstrom wavelength, which is typically colored in red Credit: NASA/SDO/AIA

Nasa’s Solar Dynamics Observatory (SDO) has captured the stunning images of solar flares from the Sun on 16 April.

The flares kicked up a massive amount of intense super-heated solar plasma in an explosion known as coronal mass ejection, or CME. The eruptions blasted off the east limb (left side) of the Sun.

The powerful solar flare occurred at 1:45 p.m. EDT (17:45 GMT) and registered a M1.7 class (medium-sized) on the scale scientists used to measure flare strength, said Nasa.

“A large coronal mass ejection blasts off over the eastern limb of the Sun. Great eruption happening on the Sun now,” Nasa scientists posted a message on twitter.

Coronal mass ejections are associated with solar flares and can also occur independently. Both the solar flares and coronal mass ejections occur as a result of Read more…

Categories: Sun Tags: , , ,