× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
c
6
r
4
c
3
m
3
h
3
1
3
n
3
s
3
d
3
c
3
r
3
e
3
New Topic  
ppk ppk
wrote...
Valued Member
On Hiatus
Posts: 3560
12 years ago
Process of Science: What evidence do scientists have that supermassive black holes exist?
Read 599 times
1 Reply

Related Topics

Replies
wrote...
Valued Member
12 years ago
Observations of orbiting stars and gas clouds in galaxies show that they are orbiting extremely massive (tens of millions of solar masses) objects that are invisible.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1198 People Browsing
Related Images
  
 813
  
 244
  
 837
Your Opinion