从昴宿星团到波江圈
2020 March 23 From the Pleiades to the Eridanus Loop Image Credit & Copyright: Hirofumi Okubo Explanation: If you stare at an interesting patch of sky long enough, will it look different? In the case of Pleiades and Hyades star clusters — and surrounding regions — the answer is: yes, pretty different. Long duration camera exposures reveal an...