保护地球，探索宇宙，发现文明
2023年12月23日 A December Summer Night Image Credit & Copyright: Ian Griffin (Otago Museum) Explanation: Colours of a serene evening sky are captured in this 8 minute exposure, made near this December’s solstice from New Zealand, southern hemisphere, planet Earth. Looking south, star trails form the short concentric arcs around the rotating planet...
2023年12月2日 Startrails over Beijing Ancient Observatory Image Credit & Copyright: Jeff Dai (TWAN) Explanation: You can take a subway ride to visit this observatory in Beijing, China but you won’t find any telescopes there. Starting in the 1400s astronomers erected devices at the Beijing Ancient Observatory site to enable them to accurately measure ...
2023年2月3日 Polaris and the Trail of Comet ZTF Image Credit & Copyright: David Ibarra Gomez Explanation: Stars trace concentric arcs around the North Celestial Pole in this three hour long night sky composite, recorded with a digital camera fixed to a tripod on January 31, near Àger, Lleida, Spain. On that date Comet C/2022 E3 (ZTF) was near its northernm...