<< Chapter < Page | Chapter >> Page > |
Card 13 / 20:
Why could the concentration of matter at the center of an active galaxy like M87 not be made of stars?
The course author didn't provide an answer for this question
Previous Card | ← Previous Card Button |
Next Card | → Next Card Button |
Flip Card | ↑ / ↓ / Return / Space |
Notification Switch
Would you like to follow the 'Astronomy' conversation and receive update notifications?