保护地球，探索宇宙，发现文明
2023年2月22日 Our Increasingly Active Sun Image Credit & Copyright: Mehmet Ergün Explanation: Our Sun is becoming a busy place. Only two years ago, the Sun was emerging from a solar minimum so quiet that months would go by without even a single sunspot. In contrast, already this year and well ahead of schedule, our Sun is unusually active, already nearing ...
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 ...