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NOAA Issues First Severe (G4) Geomagnetic Storm Watch Since 2005 – Giant Sunspot Cluster 16x Earth’s Diameter


On Thursday, May 9, 2024, the NOAA Space Weather Prediction Center issued a Severe (G4) Geomagnetic Storm Watch. At least five earth-directed coronal mass ejections (CMEs) were observed and expected to arrive as early as midday Friday, May 10, 2024, and persist through Sunday, May 12, 2024. Several

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NOAA Issues a G4 Storm Watch for Saturday as multiple CMEs head towards Earth.

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Kepler predicted that Venus' diameter is almost a quarter of the Sun's diameter, so Mercury should have a tenth of the Sun's diameter. Pierre Gassendi saw the true size of Mercury in 1631 during its transit across the Sun, and was surprised by how small it was as it looked like a sunspot