Title: 8th period Planetology meeting
Description: did we get anything done?
McScope - January 4, 2006 10:58 PM (GMT)
did we decide ANYTHING at the meeting?
Spacemonkey - January 4, 2006 11:21 PM (GMT)
Yes. Double suns, with the planet orbiting both of them. Really long day lengths (with Nomads migrating to always stay on the dayside?). ~4050mB surface atmospheric pressure, maybe a little more. Supertropical World- warm and humid everywhere. No big continents because there's more deep ocean than on Earth, but lots of hotspot and volcanic arc island chains.
I worked out some stats on a spreadsheet, twiddling the nice, round, randomly-generated stats I proposed at the meeting to come up with the following:
Radius: 6280km (just slightly less than Earth)
Mass: ~4.56E24kg (~76.4% Earth mass)
Surface Gravity: ~7.72m/s^2 (~78.7 Earth gravities)
Have yet to work out atmospheric depth.
McScope - January 4, 2006 11:49 PM (GMT)
| QUOTE (Spacemonkey @ Jan 4 2006, 06:21 PM) |
Yes. Double suns, with the planet orbiting both of them. Really long day lengths (with Nomads migrating to always stay on the dayside?). ~4050mB surface atmospheric pressure, maybe a little more. Supertropical World- warm and humid everywhere. No big continents because there's more deep ocean than on Earth, but lots of hotspot and volcanic arc island chains. I worked out some stats on a spreadsheet, twiddling the nice, round, randomly-generated stats I proposed at the meeting to come up with the following: Radius: 6280km (just slightly less than Earth) Mass: ~4.56E24kg (~76.4% Earth mass) Surface Gravity: ~7.72m/s^2 (~78.7 Earth gravities) Have yet to work out atmospheric depth. |
i object to the long days i feel that they should not exede 36 hours long, or the climae will become very complicated, and i don't want to worry about all that.
also, lets make the stars fairly big (around sol's size) so that the eclipese make a big diffrencein light, and we can have lots of photosythesis
herrdoktor - January 4, 2006 11:53 PM (GMT)
i believe that we also agreed on having a double red dwarf configuration
McScope - January 5, 2006 12:36 AM (GMT)
could they e a little bigger than red dwarfs? we want is to be SUPER-TROPICAL, not just habitable
Spacemonkey - January 5, 2006 01:53 AM (GMT)
We can compromise and say they're a K6 or K7, somewhere between red dwarf and G-type (Sol-type). But as long as the pair is luminous enough that it won't require tide-locking to be in the habitable zone, we can always make it warmer just by moving the planet closer or increasing the greenhouse effect without needing bigger stars.
McScope - January 5, 2006 01:55 AM (GMT)
is their a diffrence between warmer and brighter?
Spacemonkey - January 5, 2006 02:42 AM (GMT)
Yes. In most cases for habitable stars, it isn't very important. A planet can be made much warmer without getting any more light by suitable application of the greenhouse effect, though.
McScope - January 5, 2006 02:48 AM (GMT)
i thik we should have bothwarmth and light
how muchlight would bend around the planet? would it be like candlelight from 50 feet, or like indoor lighting or somewhere in between?
herrdoktor - January 5, 2006 03:09 AM (GMT)
should we have an atmosphere appropriate for this (which i think would be really cool), the opposite side would basically be like twilight, dark but there is still sunlight
pokemonfan13 - January 5, 2006 10:14 PM (GMT)
I personally like the idea of constant twilight.
Also, what's wrong with really long days? It might make the climate a bit more complicated, but not enough to prevent us from doing it.
aliasFrank - January 6, 2006 12:24 AM (GMT)
What I heard about the subject of light bending:
Our planet will have a twilight zone, not a dark side.
Spacemonkey - January 6, 2006 01:34 AM (GMT)
Modulo cloud cover. Lots of clouds could make the area around midnight dark no matter what index of refraction the atmosphere has. But the 'twilight zone' will at least be vastly increased in extent.
Regarding the horizon curving up- this is the situation in _Mission of Gravity_ and it leads to the Mesklinites thinking that the world is a bowl rather than a sphere; after all, both geometries will fit the map, and until they can get up into space and see it whole, how are they to know that it's not a bowl, especially when it looks like one?
Minor interesting potential culture-building tidbit.
McScope - January 6, 2006 01:48 AM (GMT)
i personally like the idea of short days because the temperature is more even, (you don't have 50+hours of constant sunshine) although, an a water world, the water may store and release heat, making the temperature pretty much constant.
I also like the idea of sparkling blue seas. I feel that I personally would be depressed if i were away from the sun for that long, and i don't like thinking about that. besides, long days has been done before. Why not 5-6 hour days? i think that this raises more interesting questions, such as: do they sleep every day,a or do they wait a week or more to sleep? what times do they do certain things? like do they only hunt at night? questions like that. Think about how much of our culture is based upon the time of day. I feel that it is harder to figure out the time of day if the day is 80 hours long, or 365 earth days long, than if it is 7 or 8.
i would Love to design a culture based on very short days
aliasFrank - January 7, 2006 02:32 AM (GMT)
Short days might be cool as well. I'm fine with that.
pokemonfan13 - January 7, 2006 10:04 PM (GMT)
...yeah. Short days seems pretty good too.
herrdoktor - January 18, 2006 06:38 AM (GMT)
i won't be able to come to the meeting today - i've got astronomy club a block, and since i'm an officer, i'm kind of expected to be there. or else
just a heads-up