NASA 宇宙の記録
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1995年から今日まで、NASAが1日1枚選定してきた「Astronomy Picture of the Day（APOD）」を日本語で楽しめるアーカイブ・ギャラリーです。神秘的な星雲から最新の惑星探査まで、詳細な解説とともにご紹介します。カレンダーからあなたの大切な日の星空を探したり、ランダム表示で未知の宇宙に出会ったり、時空を超えた宇宙の旅をお楽しみください。

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雷とスペースシャトル Lightning and the Space Shuttle

APOD

✅ Public Domain

There are many things about lightning that are not understood. Lightning has been seen in the atmospheres of Venus, Earth, Jupiter, and Saturn. A leading theory is that collisions of particles in clouds cause large areas of positive and negative charge. When large oppositely charged areas get close enough together, electrons and/or ions race between them and create a path where more charged particles can follow - lightning. On average, over 100 lightning strikes occur every second over the surface of the Earth. Here lightning strikes near a Space Shuttle before launch. Lightning can be extremely dangerous - stay out of open areas during thunderstorms.

原文（English）

There are many things about lightning that are not understood. Lightning has been seen in the atmospheres of Venus, Earth, Jupiter, and Saturn. A leading theory is that collisions of particles in clouds cause large areas of positive and negative charge. When large oppositely charged areas get close enough together, electrons and/or ions race between them and create a path where more charged particles can follow - lightning. On average, over 100 lightning strikes occur every second over the surface of the Earth. Here lightning strikes near a Space Shuttle before launch. Lightning can be extremely dangerous - stay out of open areas during thunderstorms.

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© NASA / APOD