保护地球，探索宇宙，发现文明
2020 March 28 Stars Trail over Ragusa Image Credit & Copyright: Gianni Tumino Explanation: In trying times, stars still trail in the night. Taken on March 14, this night skyscape was made by combining 230 exposures each 15 seconds long to follow the stars’ circular paths. The camera was fixed to a tripod on an isolated terrace near the center of R...
2020 March 12 Falcon 9 Boostback Image Credit & Copyright: John Kraus Explanation: Short star trails appear in this single 84 second long exposure, taken on March 6 from a rotating planet. The remarkable scene also captures the flight of a Falcon 9 rocket and Dragon cargo spacecraft over Cape Canaveral Air Force Station shortly after launch, on a resupp...