开云体育

Astronomy Picture of the Day

Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

2025 May 9

Explanation: How do black holes create X-rays? Answering this long-standing question was significantly with data taken by NASA’s satellite. X-rays cannot exit a , but they can be created in the , in particular by a of particles moving outward. By observing arriving from near the at the center of galaxy , called a , it was discovered that these X-rays lacked significant , which is expected when created more by energetic than . In the , a powerful is depicted emanating from an orange-colored circling the black hole. highly across the universe helps humanity to understand that occur on or near .

Authors & editors: () & ()
NASA Official: Amber Straughn .
, , ;
A service of: at / ,

&