Space Weather News

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Another coronal mass ejection is heading for Earth. It was hurled into space Thursday, July 18th, by an explosion near the huge sunspot 30. The expanding cloud could trigger geomagnetic activity when it sweeps past our planet. Sky watchers--especially those at high latitudes--should be alert for possible auroras after nightfall on Friday and Saturday.

Meanwhile, sunspot 30 remains impressive. It stretches 15 Earth diameters from end to end. A second spot (active region 36) has grown nearly as large in recent days. You can see both--but NEVER STARE DIRECTLY AT THE SUN. Visit spaceweather.com for safe solar observing tips.