Planets in other galaxies

  • B
  • Thread starter davidge
  • Start date
  • #1
554
21

Main Question or Discussion Point

How far are we from being capable of estimating the number of planets in other galaxies? At least, in any of the nearby galaxies that are already known to us?

Would this require state-of-art equipments?
 

Answers and Replies

  • #2
phinds
Science Advisor
Insights Author
Gold Member
2019 Award
16,223
6,292
We already estimate that the number of solar systems in normal galaxies is on the order of 200 billion. Do you mean some specific galaxy?
 
  • Like
Likes davidge
  • #3
554
21
Do you mean some specific galaxy?
No. I wasn't really thinking of any particular galaxy.
We already estimate that the number of solar systems in normal galaxies is on the order of 2 billion
Good. I did'nt know that.
 
  • #4
3,379
943
Our nearest large neIghbor galaxy is Andromeda, it appears to be quite similar to the Milky way, but roughly 30% bigger.
It's reasonable to suggest that there could be many planets there, however our present telescopes can just about manage to resolve separate stars.
2.537 million light years (but closing) is a long way from here.
 
Last edited:
  • Like
Likes davidge
  • #5
DaveC426913
Gold Member
18,850
2,330
2.537 million light years (but closing) is a long way from here.
Pshaw. It's not that far. I can see that far (or could in my younger days).
:woot:
 
  • Like
Likes davidge

Related Threads on Planets in other galaxies

  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
19
Views
14K
Replies
10
Views
3K
Replies
3
Views
740
Replies
1
Views
1K
Replies
4
Views
10K
Replies
9
Views
1K
Replies
1
Views
608
  • Last Post
Replies
2
Views
3K
Replies
3
Views
3K
Top