ScienceAugust 31, 2026

heliosphere

HEE-lee-oh-sfear

Definition

The vast, bubble-like region of space surrounding the Sun, filled with solar wind plasma and extending far beyond the solar system.

Etymology

Derived from the Greek 'helios' (Sun) and 'sphaira' (globe or ball). The term was coined in the mid-20th century to describe the domain of space dominated by the Sun's magnetic field and particle output.

In the news

In this article, the heliosphere is described as the bubble created by solar wind that protects our solar system from intense galactic radiation. Understanding its boundaries helps scientists study how solar activity shapes the environment of our planetary system.

SwRI Study Unveils Sun's Corona to Solar Wind Shift

Read the full article ↗

Mirage News

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