NASA | IBEX Spacecraft Observes Matter from Interstellar Space

The video explains how the galactic wind, composed of gases like hydrogen and helium, interacts with the solar system, forming the heliosphere. The IBEX spacecraft measures interstellar atoms, providing insights into the environment around our solar system. It distinguishes between ions and neutral atoms, revealing that neutral atoms pass through the heliopause unaffected. IBEX's findings show the galactic wind is slower than previously thought and highlight differences in interstellar atom composition, suggesting the Sun may have moved from its original region. These insights help us understand the solar system's history and future.

What are the differences between ions and neutral atoms in the context of the galactic wind?

Discuss the implications of the IBEX measurements on our understanding of the solar system's history.