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#cycle25

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Bruce MacDonald<p>This article reminds me of the old story:</p><p>Guy tells a friend: "I see spots before my eyes!"</p><p>Friend: "Have you seen a doctor?"</p><p>"No, just spots!"</p><p>Astro Bob: Let's Count Sunspots<br>"The original forecast for the current cycle, dubbed Cycle 25, was made in 2019 with the peak predicted for this upcoming July. However, more recent forecasts hint that we reached maximum in late 2024, so we may have already passed the peak. A more definitive answer will have to wait until the sun enters a slump. Then we'll be able to look back with hindsight and better frame the time."<br><a href="https://www.duluthnewstribune.com/lifestyle/astro-bob/astro-bob-lets-count-sunspots" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">duluthnewstribune.com/lifestyl</span><span class="invisible">e/astro-bob/astro-bob-lets-count-sunspots</span></a></p><p><a href="https://hachyderm.io/tags/sunspots" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sunspots</span></a> <a href="https://hachyderm.io/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://hachyderm.io/tags/Cycle25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cycle25</span></a></p>
Come On Giant Asteroid!<p>Sharing my friend's Top Of <a href="https://mastodon.radio/tags/Cycle25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cycle25</span></a> excitement.</p><p><a href="https://mastodon.radio/tags/hamr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamr</span></a> <br><a href="https://mastodon.radio/tags/hamradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamradio</span></a></p>
G7IZU RRD<p>Space Weather</p><p>Our sun is a just a little more active this weekend. There have been five flares larger than M-level in the past 48 hours or so, compared to only one between 15 and 20 Feb.</p><p>Flares and peak times are below in UT.</p><p>M3.3 12h10 UT 21 Feb<br>M1.4 14h30 UT 21 Feb<br>M4.9 02h12 UT 23 Feb<br>M1.0 09h56 UT 23 Feb<br>M1.6 11h56 UT 23 Feb </p><p>There are suggestions that we may see a second peak for "Solar Max" thanks to the sun's northern hemisphere being slower than the south in flipping its magnetic field. </p><p>Read more via the link below.</p><p><a href="https://swling.com/blog/2025/02/a-second-solar-max-peak/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">swling.com/blog/2025/02/a-seco</span><span class="invisible">nd-solar-max-peak/</span></a></p><p><a href="https://universeodon.com/tags/spaceweather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>spaceweather</span></a> <br><a href="https://universeodon.com/tags/cycle25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cycle25</span></a><br><a href="https://universeodon.com/tags/solarmax" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>solarmax</span></a></p>
Come On Giant Asteroid!<p><span class="h-card" translate="no"><a href="https://wandering.shop/@croyle" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>croyle</span></a></span> Just to annoy you even more, a friend in Oklahoma got a new Xiegu (G106? Whichever model is QRP). Threw an antenna in a tree outside his apartment and had a nice SSB QSO on 10 ... with a VK ....</p><p><a href="https://mastodon.radio/tags/hamr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hamr</span></a> <a href="https://mastodon.radio/tags/Cycle25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cycle25</span></a> <a href="https://mastodon.radio/tags/SpotsRUs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpotsRUs</span></a></p>
Dr. John Barentine FRAS<p>“As a result of this low skill in our forecasts, <a href="https://astrodon.social/tags/SpaceX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceX</span></a> saw 20 kilometers of position error in their one-day computations. If we’re uncertain in where our spacecraft are by 20 kilometers, then you can throw collision avoidance out the window.”</p><p><a href="https://spacenews.com/geomagnetic-storms-cause-mass-migrations-of-satellites/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">spacenews.com/geomagnetic-stor</span><span class="invisible">ms-cause-mass-migrations-of-satellites/</span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/Satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Satellites</span></a> <a href="https://astrodon.social/tags/SpaceSustainability" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceSustainability</span></a> <a href="https://astrodon.social/tags/Atmosphere" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Atmosphere</span></a> <a href="https://astrodon.social/tags/Cycle25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cycle25</span></a> <a href="https://astrodon.social/tags/SolarCycle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SolarCycle</span></a> <a href="https://astrodon.social/tags/SSA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SSA</span></a></p>
Dr. John Barentine FRAS<p>"The sharp altitude decay of SL1089 revealed by TLE data coincides with the storm main phase onset. Therefore, we call for future research to establish the eventual causal relationship between storm occurrence and satellite orbital decay."</p><p><a href="https://arxiv.org/abs/2411.01654v1" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/abs/2411.01654v1</span><span class="invisible"></span></a></p><p><a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceSustainability" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceSustainability</span></a> <a href="https://astrodon.social/tags/Cycle25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cycle25</span></a> <a href="https://astrodon.social/tags/SolarStorm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SolarStorm</span></a></p>
Dr. John Barentine FRAS<p>Coming next, when I get around to it: solar influences. I have several years of data from the period between the minimum to the maximum of the current solar cycle. Even at my moderately light-polluted site, I can see the influence of solar activity on night-sky brightness here. <a href="https://astrodon.social/tags/SolarCycle" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SolarCycle</span></a> <a href="https://astrodon.social/tags/Cycle25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cycle25</span></a> <a href="https://astrodon.social/tags/Sun" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Sun</span></a></p>
Dr. John Barentine FRAS<p>"A positive insight from this storm is that it helped to hasten the decay of debris objects from orbit while most <a href="https://astrodon.social/tags/satellites" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>satellites</span></a> escaped relatively unaffected." </p><p><a href="https://arxiv.org/pdf/2406.08617" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">arxiv.org/pdf/2406.08617</span><span class="invisible"></span></a></p><p><a href="https://astrodon.social/tags/SolarStorm" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SolarStorm</span></a> <a href="https://astrodon.social/tags/Cycle25" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Cycle25</span></a> <a href="https://astrodon.social/tags/Space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Space</span></a> <a href="https://astrodon.social/tags/SpaceDebris" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceDebris</span></a> <a href="https://astrodon.social/tags/SpaceSustainability" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SpaceSustainability</span></a></p>