宇宙開発
うちゅうかいはつ space development; space exploration
Breakdown
- 宇 ウ eaves, roof, house
- 宙 チュウ mid-air, air, space
- 開 カイ open, unfold, unseal
- 発 ハツ departure, discharge, publish
Each character links to its full entry — origin story, stroke order, and readings.