Earth sized planet found !

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Larry Monske

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Message 837544 - Posted: 6 Dec 2008, 20:59:17 UTC

Gliese 581 a red star with a planet found with a runaway green house atmosphere. It is 1.4 times the size of the earth. This is one the first extrasolar planets orbiting a red star. This planet lies in a green zone and has temperature ranges at 27 degrees celseus. Neither too hot nor too cool to maintain liquid water thus life could be here. It is 20.4 light years from earth.
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BMgoau

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Message 837629 - Posted: 7 Dec 2008, 3:13:45 UTC - in response to Message 837544.  
Last modified: 7 Dec 2008, 3:18:53 UTC

According to wikipedia and its sources the discovery of that super-earth was made on the 4th of April last year.

http://en.wikipedia.org/wiki/Gliese_581_c

There also this planet in the same system which was found on April 24th 2007

http://en.wikipedia.org/wiki/Gliese_581_d

Theres a handy image showing the relative habitability of planets in the system:
The two planets mentioned here appear at the bottom of the image, just outside the habitable zone. Habitable for life we know :P
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Taurus

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Message 838286 - Posted: 9 Dec 2008, 16:00:27 UTC

Sorry, but this news is extremely old.

It's so old, in fact, that National Geographic, Discovery, and the Science Channel have all had special shows of one kind or another dedicated to the discovery of the Gilese 581 exoplanets.


This planet lies in a green zone and has temperature ranges at 27 degrees celseus. Neither too hot nor too cool to maintain liquid water thus life could be here.


Not sure where you're getting that information, but I would guess that temperature estimate is based on nothing more than the direct light from the star it orbits without taking into account the atmosphere. I'm pretty sure that after the hype died down, further research concluded that Gilese 581 c is actually outside the habitable zone for Red Dwarf systems and it is likely that no liquid water exists on the surface.

Gilese 581 d is likely an ice ball.

There was a LOT of hype when these planets were discovered, but in the end, neither of them are very good candidates for habitability.
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Larry Monske

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Message 839808 - Posted: 14 Dec 2008, 4:46:54 UTC - in response to Message 838286.  

Most have been detected mathmatically and certified by astronomical observitories. 51 Peg was the 1st planet found around another star.The hot planet around this star was detected by its wobble or interaction with orbiting planets. This was done with 51 Peg several years ago mathmatically.
Now the CCD cameras are cooled in liqiud nitrogen or helium to get temperatures of the detector to minus 371 degrees farenihite. These are picking on the average of 12 extrasolar planets a week. Several multiole planets systems have been found. 55 Cancri now has 8 plabnets detected around the star, 4 are hot jupiters.
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Message 839817 - Posted: 14 Dec 2008, 5:16:40 UTC

This is old news, but interesting none the less.

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Message 839919 - Posted: 14 Dec 2008, 15:26:10 UTC - in response to Message 839808.  

Most have been detected mathmatically and certified by astronomical observitories. 51 Peg was the 1st planet found around another star.The hot planet around this star was detected by its wobble or interaction with orbiting planets. This was done with 51 Peg several years ago mathmatically.
Now the CCD cameras are cooled in liqiud nitrogen or helium to get temperatures of the detector to minus 371 degrees farenihite. These are picking on the average of 12 extrasolar planets a week. Several multiole planets systems have been found. 55 Cancri now has 8 plabnets detected around the star, 4 are hot jupiters.


Your posts are nonsensical.

Where is this information coming from?

What are your sources?

Please quote them along with your information in posts so that readers can follow.
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Profile Clyde C. Phillips, III

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Message 839970 - Posted: 14 Dec 2008, 18:41:26 UTC

Gliese had been discussed on these forums several months ago.
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Larry Monske

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Message 840465 - Posted: 16 Dec 2008, 6:09:20 UTC - in response to Message 839919.  

Most have been detected mathmatically and certified by astronomical observitories. 51 Peg was the 1st planet found around another star.The hot planet around this star was detected by its wobble or interaction with orbiting planets. This was done with 51 Peg several years ago mathmatically.
Now the CCD cameras are cooled in liqiud nitrogen or helium to get temperatures of the detector to minus 371 degrees farenihite. These are picking on the average of 12 extrasolar planets a week. Several multiole planets systems have been found. 55 Cancri now has 8 plabnets detected around the star, 4 are hot jupiters.


Your posts are nonsensical.

Where is this information coming from?

What are your sources?

Please quote them along with your information in posts so that readers can follow.

do a google search extrasolar planets its an extensive list.
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Message boards : SETI@home Science : Earth sized planet found !


 
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