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