2020年12月16日 Sonified: The Matter of the Bullet Cluster Image Credit: X-ray: NASA/CXC/SAO; Optical: NASA/STScI, Magellan/U.Arizona; Lensing Map: NASA/STScI, ESO WFI, Magellan/U.Arizona; Sonification: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida) Explanation: What’s the matter w […]
2020年12月15日 Great Conjunction: Saturn and Jupiter Converge Illustration Credit & Copyright: Sebastian Voltmer Explanation: It’s happening. Saturn and Jupiter are moving closer and will soon appear in almost exactly the same direction. Coincidentally, on the night of the December solstice &
2020年12月14日 Capsule Returns from Asteroid Ryugu Video Credit: JAXA, Hayabusa2 Explanation: The streak across the sky is a capsule returning from an asteroid. It returned earlier this month from the near-Earth asteroid 162173 Ryugu carrying small rocks and dust from its surface. The canister was rele
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 str
2020年12月12日 Saturn and Jupiter in Summer 2020 Image Credit & Copyright: Tunc Tezel (TWAN), Onur Durma Explanation: During this northern summer Saturn and Jupiter were both near opposition, opposite the Sun in planet Earth’s sky. Their paired retrograde motion, seen about every 20 years, i
2020年12月11日 Messier Craters in Stereo Image Credit: Apollo 11, NASA; Stereo Image Copyright Patrick Vantuyne Explanation: Many bright nebulae and star clusters in planet Earth’s sky are associated with the name of astronomer Charles Messier from his famous 18th century catalog. His name is als
2020年12月10日 Simeis 147: Supernova Remnant Image Credit & Copyright: Georges Attard Explanation: It’s easy to get lost following the intricate looping filaments in this detailed image of supernova remnant Simeis 147. Also cataloged as Sharpless 2-240 it goes by the popular nickname, the Sp
2020年12月09日 Arecibo Telescope Collapse Video Credit: Arecibo Observatory, NSF Explanation: This was one great scientific instrument. Starting in 1963, the 305-meters across Arecibo Telescope in Puerto Rico USA reigned as the largest single-dish radio telescope in the world for over 50 years. Among n
2020年12月08日 Great Conjunction over Sicilian Lighthouse Image Credit & Copyright: Kevin Saragozza Explanation: Don’t miss the coming great conjunction. In just under two weeks, the two largest planets in our Solar System will angularly pass so close together in Earth’s sky that the Moon wo
2020年12月07日 Mammatus Clouds over Mount Rushmore Image Credit & Copyright: Laure Mattuzzi Explanation: What’s that below those strange clouds? Presidents. If you look closely, you may recognize the heads of four former US Presidents carved into famous Mount Rushmore in South Dakota, USA. M
