保护地球，探索宇宙，发现文明
2022年12月16日 The Geminid Image Credit & Copyright: Jeff Dai (TWAN) Explanation: Returning from beyond the Moon, on December 11 the Orion spacecraft entered Earth’s atmosphere at almost 11 kilometers per second. That’s half the speed of the grain of dust that created this long fireball meteor when it entered the atmosphere on December 13, near...
2021年11月16日 Geminids from Gemini Image Credit & Copyright: Wang Jin Explanation: Where are all of these meteors coming from? In terms of direction on the sky, the pointed answer is the constellation of Gemini. That is why the major meteor shower in December is known as the Geminids — because shower meteors all appear to come from a radiant toward G...
2020年12月17日 Gemini’s Meteors Image Credit & Copyright: Stefano Pellegrini Explanation: Taken over the course of an hour shortly after local midnight on December 13, 35 exposures were used to create this postcard from Earth. The composited night scene spans dark skies above the snowy Italian Dolomites during our fair planet’s annual Geminid m...
2020年12月13日 Geminid Meteors over Xinglong Observatory Image Credit & Copyright: Steed Yu and NightChina.net Explanation: Where do Geminid meteors come from? In terms of location on the sky, as the featured image composite beautifully demonstrates, the sand-sized bits of rock that create the streaks of the Geminids meteor shower appear to flow out from t...