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Earth-like planet

 
 
Reply Thu 18 Feb, 2021 02:14 am
According to some sources the Earth-like planet was found. "Earth Like Planet Found orbiting Proxima Centauri" by Al Paslow, published Sept.1, 2016; updated June 12, 2017, Mystic Sciences. Amazing detailed online article with artist illustration
https://mysticsciences.com/2016/09/01/earth-like-planet-found-orbiting-proxima-centauri/
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Type: Question • Score: 0 • Views: 189 • Replies: 8
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engineer
 
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Reply Thu 18 Feb, 2021 07:53 am
@bearnard45,
Wikipedia keeps a list of Earth like exoplanets. You can find it here.
bearnard45
 
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Reply Thu 18 Feb, 2021 09:59 am
@engineer,
I guess that this planet is not completely like Earth. Scientists used to think that Venus is the second Earth but when we had got deeper, we found out that because of the temperature and pressure humans just can`t survive over there.
What do you think?
engineer
 
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Reply Thu 18 Feb, 2021 10:04 am
@bearnard45,
These planets are all far away. The best we can say is it is the right size, the right composition and the right distance from its star, so likely the right temperature. We don't know a lot about these planets, but it is interesting to think about.
bearnard45
 
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Reply Fri 19 Feb, 2021 03:13 am
@engineer,
We also know that it is tidally locked to its star with a high radiation environment from the frequent stellar flares so likely no atmosphere and no life.
oralloy
 
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Reply Mon 22 Feb, 2021 05:38 pm
@bearnard45,
That's the problem with red dwarf stars. Their output is so weak and feeble that the habitable zone is too close to the star.

There is an advantage to having a weak and feeble star: they are very long lived. But orange dwarfs are preferable because, being slightly warmer, the habitable zone is a safer distance from the star.
bearnard45
 
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Reply Tue 23 Feb, 2021 06:18 am
@oralloy,
Yeah, these planets are tidally locked to its star with a high radiation environment from the frequent stellar flares so likely no atmosphere and no life.
oralloy
 
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Reply Tue 23 Feb, 2021 06:42 am
@bearnard45,
So it's better to look at orange dwarf stars. They don't last nearly as long as red dwarfs (orange stars tend to have a useful life of 10 to 30 billion years depending on size), but the environment is much better.

Additionally, instead of Earth-like planets, we should look for super-Earths (planets that are even more favorable than Earth).
oralloy
 
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Reply Tue 23 Feb, 2021 07:19 am
@oralloy,
I guess the term I should have used is superhabitable.

The term super-Earth just means more massive without regard to habitability.

https://en.m.wikipedia.org/wiki/Superhabitable_planet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7757576/
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