The STCE does Fundamental Research.
NOAA 4455 produced 2 strong M-class flares and one X1 flare in less than 12 hours. The related coronal mass ejections are expected to hit the near-earth environment from late on 4 June through 5 June. There's a small chance for auroras over Belgium. UPDATED (1).
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The great geomagnetic storm of 4 February 1872 is renowned for its splendid aurora and crippling the telegraphic services worldwide, even at near-equatorial locations.
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A large sunspot group which was flare active on the Sun's far side, had quieted down significantly when facing the Earth a week later.
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Despite bad seeing conditions, the H-alpha solar telescope of the ROB/USET was able to observe the X-class flare of 24 April.
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Multi-vantage point observations, using combined imagery from multiple spacecraft and ground stations, shed light on some puzzling aspects of the evolution and flare activity of NOAA 4436.
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