https://twitter.com/Rainmaker1973/status/1730951196796440660
On November 27 and 28, a series of powerful solar flares swept across the Sun’s surface, creating this coronal hole.
This phenomenon is a temporary region of relatively cool, less dense plasma in the solar corona where the Sun's magnetic field extends into interplanetary space as an open field.
The open magnetic field of a coronal hole allows solar wind to escape into space at a much quicker rate, leading to increased chances of geomagnetic storms upon colliding with Earth’s magnetosphere.