标签： 捷克共和国

天文·每日一图

 由 

捷克上空的红色精灵

2022年9月12日 Red Sprite Lightning over the Czech Republic Image Credit & Copyright: Daniel Ščerba Explanation: What are those red filaments in the sky? They are a rarely seen form of lightning confirmed only about 35 years ago: red sprites. Research has shown that following a powerful positive cloud-to-ground lightning strike, red sprites may start as 100...

天文·每日一图

 由 

天琴座流星雨

2020 May 12 Lyrid Meteors from the Constellation Lyra Image Credit & Copyright: Petr Horálek Explanation: Where are all of these meteors coming from? In terms of direction on the sky, the pointed answer is the constellation of Small Harp (Lyra). That is why the famous meteor shower that peaks every April is known as the Lyrids — the meteors all ap...