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Title: Found! Potentially Earth-Like Planet at Proxima Centauri Is Closest Ever
Source: Space.com
URL Source: https://www.space.com/33834-discovery-of-planet-proxima-b.html
Published: Aug 24, 2016
Author: Mike Wall
Post Date: 2017-08-26 13:27:40 by farmfriend
Keywords: None
Views: 498
Comments: 19

Astronomers have discovered a roughly Earth-size alien world around Proxima Centauri, which lies just 4.2 light-years from our own solar system. What's even more exciting, study team members said, is that the planet, known as Proxima b, circles in the star's "habitable zone" — the range of distances at which liquid water could be stable on a world's surface.

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Poster Comment:

Article is a year old but still cool!

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Begin Trace Mode for Comment # 5.

#1. To: farmfriend (#0)

Long after I die we may find out if life could exist on that planet.

DWornock  posted on  2017-08-26   13:55:26 ET  Reply   Untrace   Trace   Private Reply  

Long after I die we may find out if life could exist on that planet.

I suspect that some methods will be devised to detect life on extra-solar worlds, and that we may see science claim life exists on other worlds within the next 5-10 years, if indeed any exist with reasonably abundant life on it.

I am of the opinion that life does indeed exist elsewhere in the universe. How common it may be, I have no idea.

Pinguinite  posted on  2017-08-26   14:10:04 ET  Reply   Untrace   Trace   Private Reply  

I am of the opinion that life does indeed exist elsewhere in the universe. How common it may be, I have no idea.

I too suspect life is common. Advanced life is the real question.

farmfriend  posted on  2017-08-26   14:19:31 ET  Reply   Untrace   Trace   Private Reply  

#8. To: farmfriend (#5)

I too suspect life is common. Advanced life is the real question.

Looking it up, current theory says that:

Universe is about 13.5 billion years old.

Earth is 4.5 billion years old, about 1/3rd of the age of the entire universe.

Life began on earth 4 billion years ago.

Advanced life (animals) began some 250 million years ago, about 1/40th of the age of the universe.

There are trillions of earth-like worlds just in our galaxy, and there are billions of galaxies.

It seems the math would show life should be quite plentiful. And even advanced life should not be too far away, in galactic terms. The only caveat is the question of how easy/likely it is for life to get started on a given planet matching earth's composition, sun, and orbital mechanics.

Oh, and some suggest that the moon played a critical part in earth's advanced life development by stabilizing earth orbit/rotation which provided stable climate for life to thrive, so such earth candidates may need to have a huge moon as well.

Pinguinite  posted on  2017-08-26 14:54:53 ET  Reply   Untrace   Trace   Private Reply  

I too suspect life is common. Advanced life is the real question.

I suspect life may only exist on earth. Our scientists can't create life so the probibility that nature can create it may be infinitesimal. Unless we happen to be first, certainly there is no other intelligent life as we define it in our galaxy or else, intelligent life always destroyed itself before becoming capable of traveling to the stars. Considering how the USA wants to make war on Russia, a war that will go nuclear, that is something we may do.

In any event, once intelligent life is capable of star travel, something we should be able to do within the next 100 (certainly the next 1,000) years, colonization of the galaxy may take as little as 100,000 years and certainly less than 1,000,000 years. Considering the galaxy is billions of years old, the odds that we would be less than one million years behind another intelligent life on another start system is less than 1%.

Therefore, the fact that our galaxy hasn't already been colonized implies other intelligent life does not exist. Certainly they would not have overlooked a rich prize like earth.

DWornock  posted on  2017-08-27 15:00:33 ET  Reply   Untrace   Trace   Private Reply  

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