<p>In March of 1989, a highly active sunspot region released multiple extreme solar flares, including an X4.5 flare on March 10 and a M7.3 flare on March 12. Solar flares are ranked as B, C, M, and X class, with B being the weakest and X the strongest. Within B, C, and M classes, flare<a class="more-link" href="https://www.astronomy.com/today-in-the-history-of-astronomy/march-13-1989-quebec-goes-dark/">Continue reading <span class="screen-reader-text">"March 13, 1989: Quebec goes dark"</span></a></p>
<p>The post <a href="https://www.astronomy.com/today-in-the-history-of-astronomy/march-13-1989-quebec-goes-dark/">March 13, 1989: Quebec goes dark</a> appeared first on <a href="https://www.astronomy.com">Astronomy Magazine</a>.</p>
In March of 1989, a highly active sunspot region released multiple extreme solar flares, including an X4.5 flare on March 10 and a M7.3 flare on March 12. Solar flares are ranked as B, C, M, and X class, with B being the weakest and X the strongest. Within B, C, and M classes, flareContinue reading “March 13, 1989: Quebec goes dark”
The post March 13, 1989: Quebec goes dark appeared first on Astronomy Magazine.