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Gliese 581g

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Jono
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13 Oct 2010, 3:07 pm

graywyvern wrote:
Jono wrote:
With regards to that Youtube video, I just get the message "This video contains content from National Geographic, who has blocked it in your country on copyright grounds." I think I can't watch that video, sorry.


maybe http://www.vidbuzz.net/play.php?vid=9693

or

http://www.vbox7.com/play:1e2cb138


In the first link, it seems like the video is missing but the second one works. Thanks for the link.



Titangeek
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13 Oct 2010, 3:31 pm

Or the planet might not exist at all, just found this, http://news.sciencemag.org/sciencenow/2 ... world.html


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Jono
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13 Oct 2010, 3:47 pm

Titangeek wrote:
Or the planet might not exist at all, just found this, http://news.sciencemag.org/sciencenow/2 ... world.html


So the "planet" might just be statistical fluctuations in the data?



Titangeek
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13 Oct 2010, 4:15 pm

Jono wrote:
Titangeek wrote:
Or the planet might not exist at all, just found this, http://news.sciencemag.org/sciencenow/2 ... world.html


So the "planet" might just be statistical fluctuations in the data?


so it would seem.


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13 Oct 2010, 5:21 pm

Titangeek wrote:
Friskeygirl wrote:
Red dwarf star in a tidally locked orbit, these types of stars are likely to flare up too, so if there was life its been long dead from those flares


Wouldn't life on the dark side of the planet be safe from said flare's?

Sure, but life likes to have liquid water to function, it is assumed that tidally locked planets have most of their atmosphere frozen on the dark side



Roxas_XIII
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13 Oct 2010, 6:23 pm

One report I read says that Gilese 581g most likely has a rather thick atmosphere with a lot of greenhouse gases... like Venus only with a cooler sun. If it weren't for the thicker atmosphere, then yes, it probably would be baked on one side and frozen on the other. However, I think convection currents from the greenhouse gases help regulate the heat and spread it over the planet - not evenly, there would still be a significant temperature difference between the light and dark zones - but enough to where the dark zone doesn't get cold enough to freeze atmospheric gases.


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13 Oct 2010, 6:24 pm

Titangeek wrote:
Jono wrote:
Titangeek wrote:
Or the planet might not exist at all, just found this, http://news.sciencemag.org/sciencenow/2 ... world.html


So the "planet" might just be statistical fluctuations in the data?


so it would seem.


Or maybe not. The wobble of stars caused by their planets can be checked and rechecked. That will eliminate just about all statistic variations. Some exoplanets have been spotted because they transit their stars and dim the output. This too, can be checked on several occasions to see if their is a regular pattern of dimming.

Now that we have the instruments that can measure small wobbles and dimming finding exoplanets is not as hard as it used to be. Once they found the first exoplanets the others came in fairly rapid order.

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21 Oct 2010, 8:54 am

Assuming it's still there, i have taken the liberty of creating a calendar for Zarmina's World:

http://springtail.blogspot.com/2010_10_ ... 0166619579

The most interesting question for me is whether, in the absence of sheltering night, the cerebral down-time we know as "sleep" will exist in any form, regular or irregular; or perhaps they will sleep one half of their brain at a time, as dolphins do.

m.


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Jono
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21 Oct 2010, 3:28 pm

graywyvern wrote:
Assuming it's still there, i have taken the liberty of creating a calendar for Zarmina's World:

http://springtail.blogspot.com/2010_10_ ... 0166619579

The most interesting question for me is whether, in the absence of sheltering night, the cerebral down-time we know as "sleep" will exist in any form, regular or irregular; or perhaps they will sleep one half of their brain at a time, as dolphins do.

m.


Looks interesting. With regards to your question, even though they don't have a day/night cycle, I don't see any reason why any living creatures on Zarmina's World can't sleep for short periods of time. I think dolphins adapted to the way they are because they need to at least be partially conscious to be able to surface for air. Though the creatures on Zarmina's World may need be able to be alerted easily to the presence of predators.



ruveyn
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21 Oct 2010, 3:42 pm

graywyvern wrote:
Assuming it's still there, i have taken the liberty of creating a calendar for Zarmina's World:

http://springtail.blogspot.com/2010_10_ ... 0166619579

The most interesting question for me is whether, in the absence of sheltering night, the cerebral down-time we know as "sleep" will exist in any form, regular or irregular; or perhaps they will sleep one half of their brain at a time, as dolphins do.

m.


You mean Willie is half asleep at all times?

ruveyn



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21 Oct 2010, 6:21 pm

ruveyn wrote:
You mean Willie is half asleep at all times?

ruveyn


not all the time, only about 8 hours a day (like us):

http://www.dolphinear.com/data/dolphins.htm


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