Genuinely live · measured
Solar Wind Speed
LIVE
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The speed of the stream of charged particles flowing past Earth from the Sun right now, measured a million miles upstream by the DSCOVR spacecraft.
About this number
This is a live, measured figure, read from NOAA SWPC (DSCOVR)— the same feed that powers the live map behind it. If that feed goes quiet, this counter says so rather than freezing on an old value: a frozen pulse is a lie.