11th (USA) and 12th (Europe), main belt asteroid Leona will pass directly in front of Betelgeuse, a first-magnitude star in the shoulder of Orion. CME alerts: SMS TextĮXTREMELY RARE OCCULTATION OF BETELGEUSE: For years, astronomers have worried that Betelgeuse might explode. First-look images from SOHO coronagraphs suggest that the flare did *not* produce a significant CME despite the intensity of the explosion. 8th (2307 UT), producing an M5-class solar flare ( movie) and a shortwave radio blackout over the South Pacific ocean ( map). SOLAR FLARE AND RADIO BLACKOUT (UPDATED): Sunspot AR3511 erupted on Dec. 28, 2023, as a show of thanks for years of service and hope for future daisies: Until then, we will maintain AIM's iconic 'daily daisy,' frozen at Feb. There may be some hope of a recovery as AIM's orbit precesses into full sunlight in 2024. As a result AIM is offline, perhaps permanently. What happened to NASA's AIM spacecraft, which has been monitoring NLCs since 2007? Earlier this year, the spacecraft's battery failed. As the season progresses, these dots will multiply in number and shift in hue from blue to red as the brightness of the clouds intensifies. For the rest of the season, daily maps from NOAA 21 will be presented here:Įach dot is a detected cloud. An instrument onboard NOAA 21 ( OMPS LP) is able to detect NLCs (also known as 'polar mesospheric clouds' or PMCs).

The first clouds were detected inside the Arctic Circle by the NOAA 21 satellite. The northern season for NLCs began on May 26th. There are no significant coronal holes on the Earthside of the sun. Switch to: Europe, USA, New Zealand, Antarctica 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 intensifying, and this is reflected in the number of cosmic rays entering Earth's atmosphere. Sunspot AR3511 has a 'beta-gamma' magnetic field that harbors energy for M-class solar flares.

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