Sun shoots solar eruption at Earth, NASA confirmed its arrival

A solar eruption occurred on the Sun last week, which resulted in a coronal mass ejection being shot directly towards Earth.

Published Mon, Oct 18 2021 2:33 AM CDT   |   Updated Thu, Nov 11 2021 3:15 PM CST

Last week, a large amount of solar material erupted from our star's surface, which then traveled through space, reaching Earth a few days later.

Sun shoots solar eruption at Earth, NASA confirmed its arrival 01 |

For those that are unaware of this event, the eruption happened on October 9, 2021, causing a coronal mass ejection (CME) blast to hit Earth on October 12. So, what does this mean exactly? Researchers measure the disturbance in Earth's magnetic field by solar wind using the Kp index metric. The levels range from 0, which is considered "quiet," to 9, which is regarded as "intense". The CME that arrived last week elevated the Kp index to a 6, which is considered mild-moderate.

The CME blast was associated with a solar flare that happened from Active Region 2882 that peaked on October 9 at 6:38 UTC. The solar flare was categorized as an M-class, and much like the Richter scale used to measure earthquakes, M-class solar flares are a tenth the size and intensity of the X-class flares. For example, M2 flares are twice as powerful as an M1. NASA's space instruments measured the speed of the solar wind from the eruption to be 610 miles per second, according to NASA's Moon to Mars Space Weather Operations Office.

For more coverage on last week's solar activity, check out the below links.

Read more: Earth directly impacted by blast from the Sun, here's what happened

Read more: Blast from the Sun on its way to impact Earth, will arrive very soon

Read more: Officials warn Earth will get hit by an enormous solar flare very soon

Read more: Blast from the Sun is fast-approaching Earth, will arrive very soon

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Jak joined the TweakTown team in 2017 and has since reviewed 100s of new tech products and kept us informed daily on the latest science and space news. Jak's love for science, space, and technology, and, more specifically, PC gaming, began at 10 years old. It was the day his dad showed him how to play Age of Empires on an old Compaq PC. Ever since that day, Jak fell in love with games and the progression of the technology industry in all its forms. Instead of typical FPS, Jak holds a very special spot in his heart for RTS games.

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