Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
New Topic  
Tsync Tsync
wrote...
Posts: 3450
Rep: 8 0
8 years ago
In active galaxies, their central engines may be temporarily fed by:
A) a series of supernovae around the core.
B) a sudden surge of star formation.
C) a close encounter with a neighbor galaxy.
D) the sudden collapse of the core into a supermassive black hole.
E) the fusion of helium into carbon in their cores.
Textbook 
Astronomy Today

Astronomy Today


Edition: 8th
Authors:
Read 127 times
3 Replies
Minoring in physics
Replies
Answer verified by a subject expert
RatatouilleRatatouille
wrote...
Top Poster
Posts: 3710
8 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Tsync Author
wrote...
8 years ago
Wonderful, thanks for your time and effort
Minoring in physics
wrote...
8 years ago
Slight Smile
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1209 People Browsing
Related Images
  
 1158
  
 1422
  
 177
Your Opinion
Who's your favorite biologist?
Votes: 586

Previous poll results: Where do you get your textbooks?