입력 9/15/2025 2:45:47 PM
| 수정 10/23/2025 3:16:38 PM
Total lunar eclipse after about 3 years
blood moon ⓒUnsplash / Devansh Bajaj
When the moon completely enters the Earth's umbra, the moonlight is refracted through the atmosphere, and the longer wavelengths of red light reach the moon, creating the phenomenon known as 'blood moon'.