保护地球，探索宇宙，发现文明
2022年10月7日 In Ganymede’s Shadow Image Credit & Copyright: Andrew McCarthy Explanation: At opposition, opposite the Sun in Earth’s sky, late last month Jupiter is also approaching perihelion, the closest point to the Sun in its elliptical orbit, early next year. That makes Jupiter exceptionally close to our fair planet, currently resulting in...
2022年9月3日 Sun and Moon and ISS Image Credit & Copyright: Wang Letian (Eyes at Night), Jin Ma (Beijing Planetarium) Explanation: On August 25 Sun and Moon could both be seen in planet Earth’s daytime skies. And so could the International Space Station. The ISS crossed the disk of the waning crescent Moon as seen from Shunyi district, Beijing, China...
2020年11月6日 Moon over ISS Image Credit & Copyright: Derek Demeter (Emil Buehler Planetarium) Explanation: Completing one orbit of our fair planet in 90 minutes the International Space Station can easily be spotted by eye as a very bright star moving through the night sky. Have you seen it? The next time you do, you will have recognized the location of ov...