Copyright:Luc Perrot
(TWAN)
中文翻譯:
在遙遠的宇宙中，有一顆名叫 Comet C/2025 R3 (PanSTARRS) 的彗星，正朝著太陽系之外飛去，並展現出精彩的景象！這顆彗星現在在獵戶星座的方向上出現，遠在上方的獵戶星雲也清晰可見。彗星 R3 PanSTARRS 展現出兩條不同的尾巴：一條短短的塵埃尾巴指向圖片的上方，另一條長長的、波浪狀的離子尾巴則向左上方延伸。離子尾巴指向與太陽相反的方向，因為它是由激發的二氧化碳發出的藍光。塵埃尾巴中的大顆粒相對不易受到太陽輻射的影響，能夠保持彗星的軌道，並由反射的陽光照亮。這幅精彩的圖片是前幾天在法國的留尼旺島拍攝的。快來期待 2026 年的彗星 R3 PanSTARRS 吧！
原文:
Orion never had a sword like this. As Comet C/2025 R3 (PanSTARRS) heads out of the inner Solar System, it is putting on quite a show for long exposure cameras. Currently seen toward the constellation of Orion the Hunter, the distant Orion Nebula is visible on the upper right. Comet R3 PanSTARRS is now showing two distinct tails: a short dust tail pointing toward the top of the image and a long and wavy ion tail trailing off toward the upper left. The ion tail points away from the Sun and glows blue from excited carbon monoxide. Large particles in the dust tail somewhat resist the radiation pressure that push them away from the Sun and so retain a bit of the comet’s orbit. The dust tail shines by reflected sunlight. The featured image was taken a few days ago from France’s Reunion Island in the southern Indian Ocean. Growing Gallery: Comet R3 PanSTARRS in 2026
來源:NASA每日圖片
