2021年03月31日 M87’s Central Black Hole in Polarized Light Image Credit: Event Horizon Telescope Collaboration; Text: Jayanne English (U. Manitoba) Explanation: To play on Carl Sagan’s famous words “If you wish to make black hole jets, you must first create magnetic fields.” The featu […]
2021年03月30日 Red Sprite Lightning over the Andes Image Credit & Copyright: Yuri Beletsky (Carnegie Las Campanas Observatory, TWAN) Explanation: What are those red filaments in the sky? They are a rarely seen form of lightning confirmed only about 30 years ago: red sprites. Recent research has sh
2021年03月28日 SuitSat-1: A Spacesuit Floats Free Image Credit: ISS Expedition 12 Crew, NASA Explanation: A spacesuit floated away from the International Space Station 15 years ago, but no investigation was conducted. Everyone knew that it was pushed by the space station crew. Dubbed Suitsat-1, the unn
2021年03月27日 Exploring the Antennae Image Credit & Copyright: Bernard Miller Explanation: Some 60 million light-years away in the southerly constellation Corvus, two large galaxies are colliding. Stars in the two galaxies, cataloged as NGC 4038 and NGC 4039, very rarely collide in the course of
2021年03月26日 The Medusa Nebula Image Credit & Copyright: Josep Drudis Explanation: Braided and serpentine filaments of glowing gas suggest this nebula’s popular name, The Medusa Nebula. Also known as Abell 21, this Medusa is an old planetary nebula some 1,500 light-years away in the conste
2021年03月25日 Curiosity: Sol 3048 Image Credit: NASA/JPL-Caltech – Processing: Elisabetta Bonora & Marco Faccin / aliveuniverse.today Explanation: Before Perseverance there was Curiosity. In fact, the Curiosity rover accomplished the first sky crane maneuver touchdown on Mars on April 5, 20
2021年03月24日 Aurorae and Lightning on Jupiter Image Credit: NASA, JPL-Caltech, SwRI; Text: Natalia Lewandowska Explanation: Why does so much of Jupiter’s lightning occur near its poles? Similar to Earth, Jupiter experiences both aurorae and lightning. Different from Earth, though, Jupiter’
2021年03月23日 Mars over Duddo Stone Circle Image Credit & Copyright: Ged Kivlehan Explanation: Why are these large stones here? One the more famous stone circles is the Duddo Five Stones of Northumberland, England. Set in the open near the top of a modest incline, a short hike across empty fields
2021年03月22日 From Auriga to Orion Image Credit & Copyright: Alistair Symon Explanation: What’s up in the sky from Auriga to Orion? Many of the famous stars and nebulas in this region were captured on 34 separate images, taking over 430 hours of exposure, and digitally combined to reveal th
