保护地球，探索宇宙，发现文明
2022年11月6日 Dark Ball in Inverted Starfield Image Credit: Jim Lafferty Explanation: Does this strange dark ball look somehow familiar? If so, that might be because it is our Sun. In the featured image from 2012, a detailed solar view was captured originally in a very specific color of red light, then rendered in black and white, and then color inverted. Once ...
2022年9月13日 A Long Snaking Filament on the Sun Image Credit & Copyright: Alan Friedman (Averted Imagination) Explanation: Earlier this month, the Sun exhibited one of the longer filaments on record. Visible as the bright curving streak around the image center, the snaking filament’s full extent was estimated to be over half of the Sun’s radiu...
2021年11月08日 A Filament Leaps from the Sun Video Credit & Copyright: Stéphane Poirier Explanation: Why, sometimes, does part of the Sun’s atmosphere leap into space? The reason lies in changing magnetic fields that thread through the Sun’s surface. Regions of strong surface magnetism, known as active regions, are usually marked by dark sunspot...