Bill Williams of the Chiefland Astro Village in Florida is monitoring the asteroid's approach: 12th, main-belt asteroid 319 Leona will pass directly in front of Betelgeuse, allowing observers to make a crude map of the giant star's surface. THIS ASTEROID IS HEADING FOR BETELGEUSE: Astronomers are excited. Arctic sky watchers should be alert for auroras after local nightfall. The action of the stream is disturbing Earth's magnetic field, although it has not yet triggered a geomagnetic storm. THE SOLAR WIND HAS ARRIVED: Earth is inside a stream of high-speed (>500 km/s) solar wind threaded with stronger-than-usual magnetic fields. 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 complex AR poses a growing threat for M-class solar flares.

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