保护地球，探索宇宙，发现文明
2024年1月11日 Quadrantids of the North Image Credit & Copyright: 염범석 Yeom Beom-seok Explanation: Named for a forgotten constellation, the Quadrantid Meteor Shower puts on an annual show for planet Earth’s northern hemisphere skygazers. The shower’s radiant on the sky lies within the old, astronomically obsolete constellation Quadrans Muralis. Th...
2023年10月26日 Orionids in Taurus Image Credit & Copyright: David Cortner Explanation: History’s first known periodic comet, Comet Halley (1P/Halley), returns to the inner Solar System every 76 years or so. The famous comet made its last appearance to the naked-eye in 1986. But dusty debris from Comet Halley can be seen raining through planet Earth&#...
2023年8月9日 Meteor Shower: Perseids from Perseus Credit & Copyright: Petr Horálek / Institute of Physics in Opava Explanation: This is a good week to see meteors. Comet dust will rain down on planet Earth, streaking through dark skies during peak nights of the annual Perseid Meteor Shower. The featured composite image was taken during the 2018 Perseids fr...
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...
2022年10月28日 Seven Years of Halley Dust Image Credit & Copyright: Petr Horalek / Institute of Physics in Opava Explanation: History’s first known periodic comet Halley (1P/Halley) returns to the inner Solar System every 75 years or so. The famous comet made its last appearance to the naked-eye in 1986. But dusty debris from Comet Halley can be seen...
2022年8月19日 Saturn: 1993 – 2022 Image Credit & Copyright: Tunc Tezel (TWAN) Explanation: Saturn is the most distant planet of the Solar System easily visible to the unaided eye. With this extraordinary, long-term astro-imaging project begun in 1993, you can follow the ringed gas giant for one Saturn year as it wanders once around the ecliptic plane...
2022年8月18日 Full Moon Perseids Image Credit & Copyright: Juan Carlos Casado (Starry Earth, TWAN) Explanation: The annual Perseid meteor shower was near its peak on August 13. As planet Earth crossed through streams of debris left by periodic Comet Swift-Tuttle meteors rained in northern summer night skies. But even that night’s nearly Full Moon shi...
2022年8月16日 A Meteor Wind over Tunisia Image Credit & Copyright: Makrem Larnaout Explanation: Does the Earth ever pass through a wind of meteors? Yes, and they are frequently visible as meteor showers. Almost all meteors are sand-sized debris that escaped from a Sun-orbiting comet or asteroid, debris that continues in an elongated orbit around the Sun. C...
2022年6月4日 Tau Herculids from Space Image Credit & Copyright: Zhuoxiao Wang, Yangwang-1 Space Telescope, Origin.Space Explanation: On May 31 tens of parallel meteor streaks were recorded in this 8 degree wide field of view of planet Earth’s limb from space. The image is one of a series of 5 minute long observations by the orbiting Yangwang-1 space ...
2022年6月1日 Tau Herculids Meteors over Kitt Peak Telescopes Image Credit & Copyright: Jianwei Lyu (Steward Obs., U. Arizona) Explanation: It wasn’t the storm of the century — but it was a night to remember. Last night was the peak of the Tau Herculids meteor shower, a usually modest dribble of occasional meteors originating from the disintegra...