Benjamin Carr, Ph.D. 👨🏻💻🧬<p><a href="https://hachyderm.io/tags/SpaceX" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SpaceX</span></a> launches a pair of <a href="https://hachyderm.io/tags/NASA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NASA</span></a> <a href="https://hachyderm.io/tags/satellites" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>satellites</span></a> to probe the origins of <a href="https://hachyderm.io/tags/spaceweather" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spaceweather</span></a><br>Twin <a href="https://hachyderm.io/tags/spacecraft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>spacecraft</span></a> are part of <a href="https://hachyderm.io/tags/TRACERS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TRACERS</span></a> mission, which will spend at least a year measuring <a href="https://hachyderm.io/tags/plasma" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>plasma</span></a> conditions in narrow regions of <a href="https://hachyderm.io/tags/Earth" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Earth</span></a>'s <a href="https://hachyderm.io/tags/magneticfield" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>magneticfield</span></a> known as polar cusps. These regions are located over the poles. They play an important but poorly understood role in creating colorful auroras as plasma streaming out from the Sun interacts with the magnetic field surrounding Earth. <br><a href="https://arstechnica.com/space/2025/07/spacex-launches-a-pair-of-nasa-satellites-to-probe-the-origins-of-space-weather/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">arstechnica.com/space/2025/07/</span><span class="invisible">spacex-launches-a-pair-of-nasa-satellites-to-probe-the-origins-of-space-weather/</span></a></p>