Lecture20_SolarActivityNSolarWind

At the boundary 1 bow shock region where the lism

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: a neutral plasma (equal number of electrons and protons) expanding into space at a high velocity. •  Sun’s magnetic field is embedded in this plasma. 21 Where does the solar wind stop? •  Other stars have winds too, called stellar winds •  Hence, interstellar space is not really a vacuum. •  Tenuous magnetized plasma (and a little dust) known as the local interstellar medium (LISM) fills interstellar space. •  But “near” to our sun, the solar wind dominates over the LISM. •  This bubble where the solar wind dominates is known as the heliosphere 22 Where is our solar system? Speed ~ 220 km/s Transit >me ~ 225- 250 million years Light years The boundary between the solar wind and interstellar medium The tw...
View Full Document

Ask a homework question - tutors are online