Heliopause

The Heliopause is the theoretical boundary where a star's solar wind is stopped by the interstellar medium.

• It is an astrographic feature.
• It forms the extreme outer edge of a system, lying close to the region dominated by the Oort Clouds.

Description (Specifications)

The Heliopause is the boundary marking one of the outer limits of a star's influence. It is the region where the bubble of solar wind particles begin to press into the interstellar medium and slow down, so that they are traveling slower than the speed of sound relative to the star. As it is compressed it becomes much hotter. It also carries outward some of the Sun's magnetic field, which gets stronger and becomes twisted.

• The termination shock represents the region where the velocities of particles fall to subsonic speeds.

The Heliopause is very important to vessels using Solar Sails since it represents a border beyond which many lower technology solar sailing ships cannot exceed. In some ways, poets liken Heliopause to the edge of the world for solar sailing ships.

History & Background (Dossier)

The Heliopause represents the symbolic border of an Astrographic Hex as designated by the IISS.

Image Repository

An overview of the Terra system, representative of the structure of a star system.

References & Contributors (Sources)

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.

• Marc Miller. T5 Core Rules (Far Future Enterprises, 2013), 400, 709-721.
• Author & Contributor: Lord (Marquis) and Master Scout Emeritus Adie Alegoric Stewart of the IISS