A large solar sunspot group,编号 4478, has formed on the Sun and is… (группа · солнечный · крупный)
A large solar sunspot group,编号 4478, has formed on the Sun and is approaching Earth, becoming the largest active solar region since early 2026. Scientists warn it may pose a risk due to plasma ejections, though it currently shows moderate activity. Two plasma clouds from the group are expected to reach Earth in late June.
Consensus
- The solar sunspot group 4478 is the largest active region observed on the Sun in 2026
- The group is approaching Earth and will be directly facing the planet by July 1
- Two plasma clouds from the group are expected to reach Earth on June 30 and July 1
- The group was first detected a few days prior to the reports
- Scientists from the Institute of Chemical Physics of the Russian Academy of Sciences (IKI RAS) are monitoring the group
Points of divergence
- The group has an area of approximately 1200 units, compared to the previous largest group 4366 which reached 1100 units — vedomosti
- The group has an area of 825 millionths of a hemisphere, making it the second largest active region since the beginning of 2026 — vm
- A solar flare of class M2.6 was registered on June 21, with three preceding C-class flares — vedomosti
- No specific flare was mentioned on June 21, but the group is noted to be potentially dangerous due to plasma ejections — vm
- A 'black hole explosion' occurred during a solar flare, dispersing a neutral hydrogen cloud — vedomosti
- Scientists from the North-Western University in the US found evidence of a wind from the supermassive black hole at the center of the Milky Way — vm
Coverage (2 sources)
- Largest group of sunspots in 2026 has formed on the Sun — Ведомости
- IKI RAS: Largest Group of Solar Flares in Months Emerges Toward Earth — Вечерняя Москва