史汪彗星的长尾
2020 May 8 Long Tailed Comet SWAN Image Credit & Copyright: D. Peach, Chilescope team Explanation: Blowing in the solar wind the spectacular ion tail of Comet SWAN (C/2020 F8) extends far across this 10 degree wide telephoto field of view. Captured on May 2 its greenish coma was about 6 light-minutes from Earth. The pretty background starfield lies near...