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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mastodon.social/users/coreyspowell/statuses/115407856084890051">Corey S Powell (coreyspowell@mastodon.social)'s status on Tuesday, 21-Oct-2025 13:24:42 JST</a><a href="https://mastodon.social/@coreyspowell" title="coreyspowell@mastodon.social"><img src="https://gnusocial.jp/avatar/32826-48-20221119233213.webp" width="48" height="48" alt="Corey S Powell" style="position: absolute; left: 0; top: 0;">Corey S Powell</a></section><article><p>Earth's magnetic field is changing, with its weak spot (the South Atlantic Anomaly) growing significantly over the past decade. </p><p>No, it's not doomsday...but it does affect the radiation doses hitting satellite that pass through that region.</p><p><a href="https://www.esa.int/Applications/Observing_the_Earth/FutureEO/Swarm/Swarm_reveals_growing_weak_spot_in_Earth_s_magnetic_field" rel="nofollow">https://www.esa.int/Applications/Observing_the_Earth/FutureEO/Swarm/Swarm_reveals_growing_weak_spot_in_Earth_s_magnetic_field</a> <a href="https://mastodon.social/tags/space" rel="tag">#space</a> <a href="https://mastodon.social/tags/science" rel="tag">#science</a> <a href="https://mastodon.social/tags/nature" rel="tag">#nature</a> <a href="https://mastodon.social/tags/tech" rel="tag">#tech</a></p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/5784495#notice-11352958">In conversation</a><time datetime="2025-10-21T13:24:42+09:00" title="Tuesday, 21-Oct-2025 13:24:42 JST">about 8 months ago</time> <span>from <span><a href="https://mastodon.social/@coreyspowell/115407856084890051" rel="external" title="Sent from mastodon.social via ActivityPub">mastodon.social</a></span></span><a href="https://mastodon.social/@coreyspowell/115407856084890051">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/5364177">Using 11 years of magnetic field measurements from the European Space Agency’s Swarm satellite constellation, scientists have discovered that the weak region in Earth’s magnetic field over the South Atlantic – known as the South Atlantic Anomaly – has expanded by an area nearly half the size of continental Europe since 2014.</a></label><br><video poster="" controls="controls"><source src="https://files.mastodon.social/media_attachments/files/115/407/854/632/744/344/original/80913c7f166d47a6.mp4" type="video/mp4"></source></video></li></ol></footer></blockquote>

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Corey S Powell (coreyspowell@mastodon.social)'s status on Tuesday, 21-Oct-2025 13:24:42 JST Corey S Powell
Earth's magnetic field is changing, with its weak spot (the South Atlantic Anomaly) growing significantly over the past decade.
No, it's not doomsday...but it does affect the radiation doses hitting satellite that pass through that region.
https://www.esa.int/Applications/Observing_the_Earth/FutureEO/Swarm/Swarm_reveals_growing_weak_spot_in_Earth_s_magnetic_field #space #science #nature #tech
In conversationabout 8 months ago from mastodon.socialpermalink
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1. Using 11 years of magnetic field measurements from the European Space Agency’s Swarm satellite constellation, scientists have discovered that the weak region in Earth’s magnetic field over the South Atlantic – known as the South Atlantic Anomaly – has expanded by an area nearly half the size of continental Europe since 2014.

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