The Sun emitted its strongest solar flare in 6 years

Check out the images of this powerful burst of radiation.
 By 
Chance Townsend
 on 
 The image shows a subset of extreme ultraviolet light that highlights the extremely hot material in flares, and which is colorized in teal.
Credit: NASA/SDO

In a blog post on Thursday, NASA’s Solar Dynamics Observatory observed an X2.8 solar flare — making it the most powerful flare emitted from the Sun since 2017.

Accompanying this monstrous burst of energy was a coronal mass ejection (CME), according to SpaceWeather.com, which is a massive burst of solar plasma. This particular CME is believed to have an "Earth-directed component," moving at an estimated speed exceeding 2,100 km/s (4.7 million mph).

While the Earth's atmosphere protects us from harmful radiation, CMEs can cause geomagnetic storms that can disrupt GPS and communication satellites. "[X2.8] caused a deep shortwave radio blackout over the Americas," SpaceWeather.com wrote.


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A flare of this size is not unexpected. The Sun is currently going through its version of a "hurricane season," a cycle of weather that, for our planet's star, lasts 11 years. The current cycle, Solar Cycle 25, is expected to reach its peak between January and October of next year, as predicted by the U.S. National Oceanic and Atmospheric Administration.

Solar flares are measured based on their strength, with B-Class being the smallest and X being the strongest. X-class flares do have the potential to cause disruptions to our telecommunications array, but it's rare, and scientists have been observing the Sun for hundreds of years.

While there have been X-class flares that have been spotted in the last year or so (there have been 21 since 2019), a flare of this size hasn't been seen since September 2017's X8.2. One of the largest in recent memory was an X45 flare in 2003.

Topics NASA

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Chance Townsend
Assistant Editor, General Assignments

Chance Townsend is the General Assignments Editor at Mashable, covering tech, video games, dating apps, digital culture, and whatever else comes his way. He has a Master's in Journalism from the University of North Texas and is a proud orange cat father. His writing has also appeared in PC Mag and Mother Jones.

In his free time, he cooks, loves to sleep, and greatly enjoys Detroit sports. If you have any tips or want to talk shop about the Lions, you can reach out to him on Bluesky @offbrandchance.bsky.social or by email at [email protected].

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