[SFDXA] Monday, Jun. 12, 2023 - What's up in space

[Bill]

Monday, Jun. 12, 2023
		
	What's up in space

*POSSIBLE GLANCING-BLOW CME: * NOAA forecasters say that a CME might hit 
Earth's magnetic field on *June 13th*. It was hurled into space by an 
M2.5-class explosion (movie 
<https://spaceweather.com/images2023/09jun23/m2p5_anim.gif>) on June 
9th. The glancing blow could cause, at most, G1 
<https://spaceweather.com/glossary/g1.jpg>-class geomagnetic storms. 
*Aurora alerts:* SMS Text <https://spaceweatheralerts.com>

*A MEGA-BUBBLE IN THE SUN'S ATMOSPHERE: * Last week, NOAA released a 
list of space weather highlights from Solar Cycle 25. Among many 
significant events 
<https://www.nesdis.noaa.gov/news/time-lapse-of-solar-cycle-25-displays-increasing-activity-the-sun>, 
the most spectacular was an X1-class solar flare on Oct. 28, 2021, 
blowing a mega-bubble in the sun's atmosphere. NOAA's GOES-16 satellite 
recorded the explosion:

<https://spaceweather.com/images2023/11jun23/bubble.gif>
See also a contrast enhanced movie 
<https://spaceweather.com/images2023/11jun23/Oct_28_2021_close_up.gif> 
of this explosion

This movie comes from an extreme ultraviolet telescope onboard GOES-16 
called the "Solar Ultraviolet Imager" (SUVI). Compared to NASA's 
better-known Solar Dynamics Observatory, SUVI has a wider field of view 
which allows it to capture extremely large structures like this. 
Near-realtime images from SUVI may be found here 
<https://www.swpc.noaa.gov/products/goes-solar-ultraviolet-imager-suvi>.

What happened next surprised space weather forecasters. The expanding 
bubble pushed a CME 
<https://spaceweather.com/images2021/28oct21/cme_c3.gif> out of the 
sun's atmosphere. At the time, forecasters predicted it would hit Earth 
and trigger a strong geomagnetic storm. That's not what happened, 
though. The CME passed mostly south of our planet, delivering only a 
glancing blow. The resulting G1-class geomagnetic storm on Oct. 31, 
2021, was a minor event with just a brief display 
<https://spaceweathergallery.com/indiv_upload.php?upload_id=179087> of 
auroras over Canada. This highlights the challenge of forecasting storm 
systems from a distance of 93 million miles.

NOAA's list of highlights 
<https://www.nesdis.noaa.gov/news/time-lapse-of-solar-cycle-25-displays-increasing-activity-the-sun> 
will grow longer in the years ahead. Solar Cycle 25 is still relatively 
young with maximum activity expected in 2024-2025. And the next 
mega-bubble might have better aim. Stay tuned! *CME alerts:* SMS Text 
<https://spaceweatheralerts.com>

Solar Cycle 25 Time Lapse Movie 
<https://www.youtube.com/watch?v=71we0DQSPjA>*
*4 years of solar activity in only 5 minutes


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