Assertion: solar system's boundary | /r/Synonym | the heliopause
Facets:
Source sentences:
text: The point where the solar wind becomes slower than the speed of sound is called the termination shock; the solar wind continues to slow as it passes through the heliosheath leading to a boundary called the heliopause, where the interstellar medium and solar wind pressures balance.
text: The outer boundary of the heliosphere, the heliopause, is the point at which the solar wind finally terminates and is the beginning of interstellar space.
text: Beyond that distance, the solar wind gives way to the colder, dense material that drifts in between stars, forming a boundary called the heliopause.