[SFDXA] Nasa spots solar explosion with the potential to cause radio blackouts on Earth:

[Bill]

/Forwarded from Tony N2MFT:/

Thanks to Jack K4WSB

---------- Forwarded message ---------

Nasa has caught sight of an explosion more than 100 million km from Earth.

The explosion was a solar flare — a powerful burst of energy on the sun— 
that was caught by Nasa’s sun-observing Solar Dynamics Observatory (SDO) 
on January 20.

Nasa’s Solar Dynamics Observatory watches the sun constantly and 
captured an image of the event. The images show the solar flare as a 
bright flash on the right side of the sun.

Solar flares and eruptions can impact radio communications, electric 
power grids and navigation signals on Earth. They can also pose risks to 
spacecraft and astronauts.

This flare is classified as an M5.5 class flare, by the National Oceanic 
and Atmospheric Administration’s (NOAA) ‘space weather scale’, which is 
considered to be of moderate strength.

Solar flares like this are essentially a massive release of 
electromagnetic radiation. When an outburst occurs, that radiation 
spreads out across our solar system at the speed of light. If it’s 
powerful enough, the burst of energy can directly influence radio waves, 
electronics, and other Earth-based technologies.

This particular flare had the potential to black out high-frequency 
radio communications ‘for tens of minutes’ on Earth’s sunlit side. The 
blackouts were supposed to affect high-frequency communication, 
primarily impacting the 3 to 30 MHz band. However, solar flares do not 
affect smartphone GPS systems or most modern navigational technology for 
that matter.

Solar flares usually take place in areas on the sun marked by the 
presence of strong magnetic fields called active regions. As these 
magnetic fields evolve, they can reach a point of instability and 
release energy in a variety of forms including electromagnetic 
radiation, which are observed as solar flares.

The NOAA’s Space Weather Prediction Center is the US government’s 
official source for space weather forecasts, watches, warnings, and alerts.

Nasa works as a research arm of the nation’s space weather effort by 
observing the sun and our space environment constantly with a fleet of 
spacecraft that study everything from the sun’s activity to the solar 
atmosphere and magnetic fields in the space surrounding Earth.
Source: Metro by Anugraha Sundaravelu
https://metro.co.uk/2022/01/24/nasa-spots-solar-explosion-with-the-potential-to-cause-radio-blackouts-15971574/?
	
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Nasa spots solar explosion with the potential to cause radio blackouts 
on Earth: xxxx dlvr.it/SHlnLr <https://t.co/rciZhPqRAe> #hamradio 
<https://twitter.com/search?q=%23hamradio&src=hash> #hamr 
<https://twitter.com/search?q=%23hamr&src=hash> #amateurradio 
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1/25/22, 3:50 AM 
<https://twitter.com/sar_news/status/1485897863443849216?s=11>

	

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