Polar coronal holes have begun to form again on the Sun - structures that almost completely disappeared in 2021-2022. This was reported by the Solar Astronomy Laboratory of the IKI and ISZF.
According to images from orbital observatories, a stable dark zone has already been observed in the region of the star's north pole over the past week, and a decrease in brightness is noted in the southern polar region. This indicates the beginning of a similar process.
Polar holes differ from ordinary coronal holes not only in their location, strictly at the poles, but also in their lifespan - such formations can persist in the same place for years. Powerful solar wind flows are recorded inside polar holes, the speed of which is significantly higher than that of flows from ordinary coronal holes. However, due to their direction along the solar axis, they have practically no direct impact on Earth.
Astronomers consider the appearance of polar holes as a sign of weakening solar activity.
This also explains their absence in recent years - the objects were destroyed due to the Sun passing the peak of the 25th activity cycle in 2023-2024. Accordingly, their appearance indicates an objective decrease in solar activity this year, although, globally, it still remains at a fairly high level, still causing significant "inconvenience" to the Earth.
Earlierwww1.ru reported that a solar prominencereached Earth on July 26.
Read materials on the topic:
How to protect yourself from magnetic storms: advice from KBSU experts
Magnetic storms will cover the Earth on the weekend - 65% probability
A coronal hole has appeared on the Sun, capable of causing a magnetic storm on Earth
Now on home
VASO confirmed that the runway extension is part of the wide-body aircraft production
The device is powered by an AMD Ryzen AI MAX+ 395 processor with integrated AMD Radeon 8060S graphics
The use of ammunition increased the speed of combat operations of the "Msta-S" howitzers
The "KUB-10ME" Device Received an Optoelectronic Guidance System
New turbojet engine will change the approach to supersonic flight without classic afterburner
Foreign delegation visited the "Parus electro" electrical equipment manufacturing plant
"The new system is more powerful than the existing version"
Sergey Marzhetsky stated that placing orders in the DPRK could become a realistic solution under sanctions
NDTV: India Aims to Acquire 40 Combat Aircraft
The autonomous platform can travel up to 60 km
Casting technology allows creating elements with geometry that cannot be obtained by other methods
The manufacturer promises compliance with global safety and quality standards