Images of the sun usually show a burning ball of fire, shining bright in the sky. However, NASA has just released a stunning picture which captured the exact opposite – a giant dark area on the sun’s upper half.
The image, snapped by NASA’s Solar Dynamics Observatory (SDO) from May 17-19, shows what is known as a “coronal hole” on the sun, described by the space agency as a “low-density region of the sun’s atmosphere, known as the cornea.”
Corneal holes are visible in certain types of extreme ultraviolet light, which is invisible to the human eye. NASA has colorized the picture in purple, for easy viewing. read more…
A tsunami of solar particles could wreak havoc on planet earth
If the threats of climate change, a pandemic or nuclear war haven’t given you enough to worry about, how about solar weather?
Large-scale eruptions on the surface of the sun can create solar-particle waves that damage satellites and disrupt power grids — not to mention the GPS in your car.
Space Weather Canada
Canadian Space Weather Forecast Centre at Natural Resources Canada are testing for the potential of a solar flare hitting the earth. (Steve Fischer/CBC)
Scientists at the Canadian Space Weather Forecast Centre are now preparing for the next big event.
At their command centre near the Mer Bleue Conservation Area in Ottawa, scientists are using an array of highly specialized instruments to test for geomagnetic activity.
Heightened levels are an indicator of solar flares and their evil twin, Coronal Mass Ejections or CMEs.
CMEs cause extensive damage
CMEs are massive eruptions on the surface of the sun that send a tsunami of particles into the solar system — and can dramatically change the earth’s magnetic field once they arrive here.
Fortunately, a CME in 2012 missed earth but others have hit here with disastrous effects. read more…
“Massive Solar Flare” Just Missed Earth In 2012 Report Says
- Massive electromagnetic pulse caused by solar flares could bring an end to modern civilization as we know it
- Extreme space weather event could wipe out power for months and render cellphones and internet useless
- One study estimates that in the U.S. alone it could cost the fragile economy up to $2.6 trillion
- Now the White House are preparing for the threat after a major solar flare narrowly missed the Earth in 2012
- Strategy includes improving prediction abilities as forecasters only have been 15-60 minutes warning and how to protect energy grids
The U.S. government are preparing for a catastrophic solar flare which could wipe out power across the world for months.
The last powerful geomagnetic solar storm which hit the earth was in 1859 which caused telegraph lines to explode, setting fire to some telegraph offices, and power to fail across Europe and North America.
In today’s far more advanced and technological world, experts the effects would be devastating.
The massive electromagnetic pulse (EMP) from solar flares could wipe out power grids, bringing an end to modern civilization as we know it as cellphones, credit cards and the internet were rendered useless.
In the U.S, alone researchers estimate the cost on the fragile economy would be up to $2.6 trillion, according to a 2008 National Academy of Sciences study.
The report warned that power outages after an extreme solar storm could last months or even longer if it wiped out the transformers. read more…