![]() Credit: NASA's Solar Dynamics Observatory The source was sunspot complex AR2993-94, which is almost directly facing Earth.Ībove: An M9.6-class solar flare on April 21st. On April 21st at 0157 UT, Earth-orbiting satellites detected a strong M9.6-class solar flare. STRONG SOLAR FLARE (UPDATED): If you round up, it was an X-flare. Now for the bad news: Bright moonlight will interfere with the display, sharply reducing visible meteor rates to no more than 5 to 10 per hour. THE LYRID METEOR SHOWER: Earth is entering a stream of debris from Comet Thatcher (C/1861 G1), source of the annual Lyrid meteor shower. Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining-a result of the yin-yang relationship between the solar cycle and cosmic rays. Credit: SDO/HMIĬosmic Rays Solar Cycle 25 is beginning, and this is reflected in the number of cosmic rays entering Earth's atmosphere. ![]() Sunspot complex AR2993-94 poses a threat for X-class solar flares.
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