- #1
karl22
- 5
- 0
Hi everybody
I just wanted to ask are all the galaxies in the universe visible by the light they send?
In the other words are all the galaxies optically visible ?How do scientists predict the number of galaxies and do they understand the existence of other galaxies(very far galaxies) by optical observation or in some cases no light is visible and they must only rely on the nucleolus radiation ?How do they understand the existence of very far galaxies ?
Thanks you all
Have a nice day
I just wanted to ask are all the galaxies in the universe visible by the light they send?
In the other words are all the galaxies optically visible ?How do scientists predict the number of galaxies and do they understand the existence of other galaxies(very far galaxies) by optical observation or in some cases no light is visible and they must only rely on the nucleolus radiation ?How do they understand the existence of very far galaxies ?
Thanks you all
Have a nice day