I was surfing and found the following at https://news.wttw.com/2022/03/30/sun-erupts-massive-solar-flare-wednesday-you-re-going-want-see

Here’s what we know about Wednesday’s flare.

When did it happen? NASA’s Solar Dynamics Observatory captured an image of the event on Wednesday, which peaked shortly after noon, Central time.

What exactly is a solar flare? Flares are powerful bursts of radiation. Wednesday’s was classified as an “X-Class” flare, which is the most intense.

What’s the big deal? Apart from just looking cool, flares can cause what are known as “coronal mass ejections,” in which billions of tons of plasma, carrying an embedded magnetic field, are expelled from the Sun. These ejections can travel anywhere from 250 to 3,000 kilometers per second. If they’re directed toward Earth, the fastest can arrive in 15-18 hours; the slower ones take days.

Is this the end of the world? No. According to NASA: “Harmful radiation from a flare cannot pass through Earth’s atmosphere to physically affect humans on the ground.” But flares do create “space weather,” or geomagnetic storms, which can mess with GPS and satellite signals, as well as electric power grids and radio communications.