ThanQ Bakers!
You boys keep this place running!
Nothing surprising, it's also called a heliopause.
(some robot said):
The heliopause is the boundary between the Sun's solar wind and the interstellar medium, where the pressures of the two winds are equal. It's located about 123 astronomical units (AU) from the Sun, which is about 11 billion miles. The heliopause is the outermost part of the heliosphere, a bubble of solar material that surrounds the planets and protects them from interstellar radiation.
The heliopause is a complex area where the pressures of the solar wind and interstellar medium are determined by the density and speed of the gases, not their temperature. The balance of pressure causes the solar wind to flow back down the tail of the heliosphere. The heliopause's shape is constantly changing due to the interstellar gas wind caused by the Sun's movement through space.
The heliopause can't be seen from Earth, so it must be identified through in-situ measurements. The Voyager 2 spacecraft crossed the heliopause on November 5, 2018, and collected radiation data that showed temperatures of up to 89,000 degrees Fahrenheit (31,000 degrees Celsius). This was roughly double the temperature that previous models had predicted, suggesting a more violent interaction between the solar wind and cosmic rays.