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Temperate exo-earths cluster around 2 earth-radii
Posted: Tue Jan 22, 2013 5:53 pm
by DeltaV
http://exoplanetarchive.ipac.caltech.edu/
<img>
http://exoplanetarchive.ipac.caltech.ed ... adtemp.png [/img]
Dr. Scholl's stock price skyrockets. Just kidding.
Editor - try shrinking the image so it doesn't cause page bleed. I hate page bleed and have been editing it since the beginning.
Posted: Tue Jan 22, 2013 9:56 pm
by ladajo
I think this data interpretation is purely a function of our current technical ability. I predict that with the onset of better detection capabilities we will see a rise in the number of smaller planetary detects.
If you look at the history of detects, you can see that we started seeing the big stuff, and as we got better, we starting seeing more and more small stuff.
We are not yet done in the 'getting better tech' department to find them, and over the next ten years, there will be a plethora of 1.0 and smallers that we have not yet been able to see because our 'glasses' have not been good enough.
Posted: Tue Jan 22, 2013 10:00 pm
by KitemanSA
Note that we CAN detect smallers, but they have to be close in (i.e., HOT) to detect them. Ladajo has it right. Better equal cooler, in multiple ways.
Posted: Sun Jan 27, 2013 6:02 am
by bennmann
Random slightly relevant fact:
If a planet were just a few percentage points more water than iron than earth, 1g surface gravity is plausible for significantly bigger radii than earth and you can keep that radiation shielding life needs.
If you have a planet that is mostly water to the core, radiation would prevent surface life but the planet is ~2.2 times bigger than earth with 1g surface gravity.
Posted: Sun Jan 27, 2013 6:10 am
by kcdodd
If it's all water, what surface are you talking about. Water is pretty good at shielding radiation.
Posted: Sun Jan 27, 2013 1:55 pm
by paperburn1
kcdodd wrote:If it's all water, what surface are you talking about. Water is pretty good at shielding radiation.
Intelligent octopus ruling the great water domain. i like it.
Posted: Sun Jan 27, 2013 3:44 pm
by KitemanSA
paperburn1 wrote:kcdodd wrote:If it's all water, what surface are you talking about. Water is pretty good at shielding radiation.
Intelligent octopus ruling the great water domain. i like it.
Please, stay on topic, a Polyhedropus!
Posted: Tue Jan 29, 2013 11:33 pm
by bennmann
kcdodd wrote:If it's all water, what surface are you talking about. Water is pretty good at shielding radiation.
Cthulhu......
Posted: Wed Jan 30, 2013 10:23 pm
by ladajo
The horror...
