Sol (Sun) and its phenomena

Impulsive M6 flare on the sun this morning.

Big Blasts from the Farside Come into View | Space Weather News 27 September 2025
Space Weather has calmed down a little bit this week, despite some gorgeous eye candy erupting from the Sun's limb, only some fast solar wind and a slow, but dense stealthy solar storm are headed towards Earth. The stealthy solar storm may only give us a glancing blow, and it will hit alongside the fast solar wind, so it may simply enhance the effects of the fast wind stream. Aurora photographers at high latitudes should expect shows, but only if the fast wind and stealthy solar storm are larger than expected should those at mid-latitudes expect anything more than fleeting shows. Amateur radio operators and GPS users should expect mild conditions with noise on the dayside radio bands slowly increasing over the next few days. By mid-next week we could be seeing more frequent radio blackouts due to the cluster of new active regions that are rotating into Earth view. Learn the details of the solar activity, watch a lot of new regions grow in the hot longitudes near the Sun's east limb, and see what else is in store this week. #spaceweather #aurora #sun

September 24, 2025 / 11:17 AM EDT / CBS/AP End snip:
The goal is to better understand the sun in order to better protect Earth, according to officials. As spectacular as they are, the northern and southern lights will not be the missions' focus.

During a preview of NASA's upcoming Artemis mission around the moon, science officials said Tuesday that these new space weather missions will enhance forecasting and provide vital alerts if major solar activity strikes. If that happens, the four astronauts will take temporary shelter in a storage area under the capsule's floor to avoid the heightened radiation levels.

The launch this week took place during a surprisingly active period for the sun, according to a recent study conducted by two NASA scientists, who noted that the uptick could affect space weather patterns as well as technology on Earth. Officials at NASA said each of its satellite missions will aim to better track those patterns, along with TRACERS twin satellites that SpaceX helped NASA launch several months ago to study how electrically-charge solar wind interacts with Earth's magnetic field.

"Space weather predictions are critical for supporting the spacecraft and astronauts of NASA's Artemis campaign, as understanding the space environment is a vital part of mitigating astronaut exposure to space radiation," NASA said in a statement.

Recent comments (from SpaceWeather News) of conflicting agendas by telecommunications and scientific satellites have overloaded the orbital positions, which may lead to possible collisions in the future.

Sunday, Sep. 28, 2025
COMETS ARE BEING PHOTOBOMBED: Comet Lemmon (C/2025 A6) is rapidly brightening and could become a naked-eye object in October. First, it has to fight through the interference. This movie of the comet from Lionel Majzik of Tápióbicske, Hungary, is streaked by a mixture of bright and faint lines:


These are satellites crossing the field of view--members of a growing number of megaconstellations crowding low Earth orbit.

A rising percentage of long-exposure comet images submitted to Spaceweather.com show this kind of interference. Our photo gallery is rife with examples. Here's one of interstellar Comet 3I/ATLAS being photobombed. And another. And another. The vast majority of streaks are Starlink satellites.

Astronomers have raised alarms. Future plans call for as many as 42,000 Starlink satellites--and Starlink is not alone. Amazon’s Project Kuiper has begun launching its planned 3,200-satellite broadband fleet. China is pushing even harder, with two separate megaconstellations on the drawing board: Guowang (13,000 satellites) and "Qianfan" ("Thousand Sails", 15,000-plus), Together, they could eventually rival or surpass Starlink in size.

If all these plans come to frution, the sky may one day host 100,000 small reflectors competing with celestial targets. Astronomers should take their long exposures now ... while they still can.
 
The Sun keeps behaving different, apparently.

From Solar Astronomy Laboratory of the Space Research Institute of the Russian Academy of Sciences
ALERT: A sharp intensification of the geomagnetic storm is observed. The strongest storm in 3 months is occurring

Currently, a sharp increase in geomagnetic fluctuations is being recorded. According to the latest measurements, the geomagnetic activity index Kp has surged to 7.33, corresponding to a strong magnetic storm of category G3+ on the 5-point scale. Events of this level were last observed only on June 1 of this year, when a direct hit from a large solar prominence was registered on Earth. Powerful auroras continue on the planet. The auroral oval, following the day-night boundary line, has now moved to the western hemisphere, covering almost the entire territory of Canada and the northern states of the USA.

According to observations, the situation in near-Earth space remains significantly complicated due to increased solar activity. There have been no impulsive hits on the planet so far. The impact is due to the systemic saturation of the solar wind with dense flare plasma, which occurred during numerous events over the past few days. Large ejections of matter into space were registered after almost all notable flares, but it was believed that their speed was insufficient to escape into interplanetary space. However, it is now clear that part of this matter was able to reach the solar wind detachment heights and was carried by it to the planet.

According to the international space weather scale, the following possible consequences are noted for storms of level G3+:
— Impact on power systems, including false triggering of protection systems;
— Impact on spacecraft, including increased orbital drag;
— Impact on ground systems: interruptions in satellite navigation, problems with low-frequency radionavigation, interruptions in HF radio communication.

The forecast for the day is undefined. The situation is currently not described by models. Scenario forecasts for a storm of this category were not available.
 
We are currently undergoing through geomagnetic disruptions at the planetary level:

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From the Russian Institute, morning summary:

The geomagnetic storm has been continuously ongoing for about 30 hours

The magnetic storm that began yesterday, on the last day of September, around 3 a.m., is still continuing as of now. The continuous duration of the event has already reached about 30 hours. The conditions in the space surrounding the planet currently do not favor the stabilization of the magnetosphere. Over the past day, the parameters of the interplanetary environment have mostly worsened. The solar wind speed near Earth has increased from approximately 400 km/s to about 700 km/s . The plasma temperature has tripled, rising from 100,000 to 300,000 degrees. Moderate values of the interplanetary magnetic field strength provide some support. Its peaks coincided with yesterday’s peaks in magnetic field fluctuations. Currently, the field strength has decreased by 40-60%, which allows the storm to remain at a moderate G1-G2 level.

Last night, relatively short but more intense expansions of the auroral zone were observed compared to the day before. Among other reports, a significant number came from the Moscow region, where the aurora was barely visible to the naked eye but was confidently recorded using phones and cameras. A significant number of reports also came again from the northeastern regions of the country.

The forecast for the next day remains unfavorable. Despite the possibility of the storm decreasing to a "yellow" level within the next few hours, conditions both on the Sun and in near-Earth space do not favor normalization. Moreover, the forecast for the day, for the first time in many days, includes more than a 50% probability of the formation of X-class flares on the star.
 
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