How many planets can we estimate in other galaxies?

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SUMMARY

The discussion centers on estimating the number of planets in other galaxies, particularly focusing on the Andromeda galaxy, which is approximately 2.537 million light years away from Earth and 30% larger than the Milky Way. Current estimates suggest that there are around 200 billion solar systems in normal galaxies, with 2 billion solar systems specifically noted. Present telescopes are limited in their capability to resolve individual stars, making accurate estimations of planetary counts challenging. Advanced equipment will be necessary to improve our understanding of planetary systems in distant galaxies.

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  • Understanding of astronomical distance measurement
  • Familiarity with current telescope technology and capabilities
  • Knowledge of galaxy structures and classifications
  • Basic concepts of planetary formation and solar systems
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  • Research advancements in telescope technology, such as the James Webb Space Telescope
  • Explore methods for estimating exoplanet populations in distant galaxies
  • Study the characteristics of the Andromeda galaxy and its comparison to the Milky Way
  • Investigate the implications of finding planets in other galaxies for astrobiology
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Astronomers, astrophysicists, and space enthusiasts interested in the exploration of galaxies and the potential for discovering exoplanets beyond our solar system.

davidge
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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?
 
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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?
 
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phinds said:
Do you mean some specific galaxy?
No. I wasn't really thinking of any particular galaxy.
phinds said:
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.
 
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.
 
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rootone said:
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:
 
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