太陽系

• Reading: たいようけい
• Romaji: taiyoukei
• Kanji breakdown: 太 (tai) — great, thick; 陽 (you) — sun, positive; 系 (kei) — system, lineage
• Pronunciation: /ta.i.joː.keː/

Meaning

Solar system; the system of planets and other celestial bodies orbiting the Sun.

A scientific compound noun used in astronomy, science education, and general knowledge contexts. Refers specifically to our Sun and its orbiting bodies. Commonly appears in school textbooks, science documentaries, and news about space exploration.

Examples

1. 太陽系には八つの惑星がある。 There are eight planets in the solar system.
2. 太陽系の外にも生命が存在するかもしれない。 Life may exist beyond the solar system as well.
3. 子供の頃に太陽系の模型を作ったことがある。 I once made a model of the solar system as a kid.

Usage Guide

Context: science, astronomy, education

Tone: informational

Origin & History

From Sino-Japanese 太陽 (taiyou, sun — literally 'great yang/positive') + 系 (kei, system/lineage). A direct translation of the Western astronomical concept.

Cultural Context

Era: Modern

Generation: All ages

Social background: Educated