coronal clouds
... that coronal clouds from the Sun can damage electric devices, even destroy whole grids, when they reach Earth?
... that <b id="mwAjE"><a class="mw-redirect" href="./Coronal_cloud" id="mwAjI" rel="mw:WikiLink" title="Coronal cloud">coronal clouds</a></b> from the Sun can damage electric devices, even destroy whole grids, when they reach Earth?