Ok... Hurry Again!!!!! Looky!! Looky!!

Discussion in 'Astronomy, Exobiology, & Cosmology' started by Tristan, Jan 11, 2003.

  1. Tristan Leave your World Behind Valued Senior Member

    Messages:
    1,358
    Help me out here. Additions (ignore sp)? Help? Varification of information? Plz!

    Any more ideas on factors that effect life would be helpful!

    Thanks
    T



    .-.-.-.-.-.-.-.-.-..--..-.-.-....-.-.-.-.-.-.-.-.-.-.-.-..-.-.

    Life on another planet, orbiting a different star could be very different from our own. My hypothetical plant is named Axiom. It is the second planet of a three planet system orbiting the blue, hotter, younger, main sequence star. This star system is Alberio located in Cygnus. Life has been defined on our planet by many, many factors. First off, how does the moon affect our planet? Next, I will explore the effects that distance of planet to the star has, temperture regulation, and random catostrpoic events. Lastly, I will describe the importance of a magnetic field for the planet as well as an atmosphere. Orbiting this young blue star is Axiom, a hypothetical planet of life very different from our own. There are no major landmasses, only a few scattered islands. Most of the life here is aquatic.
    The moon, a symbol throughout human history, has earned its rightful place as an important contributing factor to the development of life here on earth. The most noticable effect of the moon are the ocean tides. These are cause by Tidal Gravity. The moon exerts gravity on the earth which consequently causes lower sea levels in some locations and higer sea levels at different times. Tides have become extremely important, creating a huge varation of small marine creatures adapted to aquatic and land enviroments. On Axiom, any type of moon is absent and so tides are non-existant. This creates mostly a deep sea enviroment where mostly bioluminescent fish thrive in the depths.
    The distance of Axiom from the star is roughly .5 times that of the distance of earth to the sun. Since Axiom is much closer to the star, it recieves much more solar wind, or radiation. This is very important as life has to adapt to much higher doses of UV rays, along with the other radiation that bombards the creatures. This double star system does not permit a nightime. Also contributing is the distance Axiom is from the star. Thus, greater temperatures are achieved but are still held in check. The deepest part of the oceans are much more colder than the surface water. This permits a average surface water temperature of 160 degrees and no more (since regular oceanic currents bring colder water upwards and warmer downwards). Most life on Axiom lies at the bottom of the oceans. Coral, fish, and other organisms co-exist in a diverse ecosystem powered by bioluminecence. This provides light needed for the poorly adapted fish and larger aquatic life. They are not adapted to the darkness because of a recent event that took place. The magnetic fields recently deteoriated and dissapeared causing the little emerging land organisms to be instantaneously wiped out. The fish, aquatic mammals, and other marine life then made the migration to the depths to escape the solar wind of deadly particles that could now pour through the atmosphere. This is similiar to an event that took place in Earth's history and shows a direct correlation between life and random catostrophic events. The theorized asteroid that annhilated the dinosaurs after 65 million years of being the dominant life forms, made it possible for the rise of mammals. Eventually life evolved and now we have humans. After the annhilation of any land creatures attempting life on the surface of Axiom, the survival and dominance of aquatic life was assured.
    A stable magnetic field and atmosphere are somthing that Axiom has possesed and still does, to an extent. Before my random catostropic event, magnetic fields protected the surface of Axiom from harsh, deadly solar winds. Life tends to spread, however, on the surface of my planet, the solar wind has caused a sterilaztion effect. Also very important to my planet is an atmosphere. My atmosphere contributes a considerable amount to the temperature as well as protection from asterioids and meteors of small size. Axiom has a high pressure of 3 ATM on its surface. This causes a higher boiling temperature for water which in turn helps determine the amount of clouds. If it were not for this regulatory factor, there could be easily be a runaway cooling affect in which the temperature of the planet drops considerably due the the complete coverage of clouds which reflect sunlight
     
  2. Google AdSense Guest Advertisement



    to hide all adverts.
  3. Cthulhu Banned Banned

    Messages:
    130
    Planet isn't spelled plant. Second line.
     
  4. Google AdSense Guest Advertisement



    to hide all adverts.
  5. Cthulhu Banned Banned

    Messages:
    130
    catostrpoic
     
  6. Google AdSense Guest Advertisement



    to hide all adverts.
  7. Cthulhu Banned Banned

    Messages:
    130
    Ok, a lot more spelling mistakes and insuuficient data on this rocky body. Is it a terrestrial planet like Earth or a moon orbiting a Gas Giant? What gravity does it posess? The biosphere is narrow for young stars. You might not have placed your planet within the stars biosphere. What kind of orbit does it have? What relation do the other planets have in this complex double star system?
     
    Last edited: Jan 11, 2003
  8. wet1 Wanderer Registered Senior Member

    Messages:
    8,616
    A double star system? It will have tides.

    .5 distance? Tough to have a liquid biosphere. Higher gravity will help, but that limits life.

    Twin stellar system? Must be a bitch of an orbit not to lose the planet to irregularities of gravity.

    Shallow seas would present another picture. One of tides advancing far inland, provided they were not mountainous. With the posibility of the uv affecting life more strongly. The uv will not penetrate to any depth in water.
     
  9. thed IT Gopher Registered Senior Member

    Messages:
    1,105
    Are the other planets Lemma and Conclusion?
     
  10. Tristan Leave your World Behind Valued Senior Member

    Messages:
    1,358
    okok, its a rough draft. Spelling ill fix.

    "Is it a terrestrial planet like Earth or a moon orbiting a Gas Giant?"

    Planet like earth.

    "What gravity does it posess?"
    Lets see here, 2 g's?


    "The biosphere is narrow for young stars. You might not have placed your planet within the stars biosphere."

    I guessed.


    "A double star system? It will have tides"
    Depending on how far away the other star is, it shouldn't. right?

    ".5 distance? Tough to have a liquid biosphere. Higher gravity will help, but that limits life."
    How does that limit life? Are you being bias to life on earth? Anything is possible.

    "Twin stellar system? Must be a bitch of an orbit not to lose the planet to irregularities of gravity."
    What if the other sun is 1 ly away. Is technically possible right?

    But if I had a sterilaztion affect due to solar winds, the water depths would protect marin life, right?


    Ahhhh screw this! Someone help me. I need to write an 800 word essay on how and why life would be different on a planet orbiting in a KNOWN binary system. HELP! Im going to change it all around scrap that essay.
    Here is what I want

    Axiom
    Tilt: 10 degrees
    Rotation: 41 hrs
    Revoulution: 6 months.
    Size: 30000 miles diameter
    Moons: Lemma (thx for idea) 200 miles wide
    Aquatic life. deep sea. Bioluminecence.
    NO Land masses.
    Thick atmosphere 2 earth atmospheres
    high pressure
    High surface temperatures.
    Magnetic fields: Non existant


    Now I need to explain effects on life of the above. Add to it plz

    Reasons

    Axiom
    Tilt: seasons
    Rotation: ?????
    Revoulution: ?????
    Size: atmosphere??? Need some help
    Moons: Tides?
    Aquatic life. deep sea. Bioluminecence.
    NO Land masses.: All aquatic life.
    Thick atmosphere: Higher protection from sun.
    high pressure: Higher boiling temps, ect. so water doesnt boil away.
    High surface temperatures.: Little life on surface adapted to harsh radiation from no magnetic field, most deep sea where its cooler
    Magnetic fields: sterilized top after it dissapeard.



    More, more..
    Plz I really got to get this done.
     
  11. Jaxom Tau Zero Registered Senior Member

    Messages:
    559
    I've been working on a hypothetical system myself. Here's some stuff that might help (or make things more complicated):

    To explore stable orbits around binary stars.

    http://burtleburtle.net/bob/physics/binary.html

    Here:

    http://www.cs.ucr.edu/~jimv/life.txt

    and here:

    http://www.planetarybiology.com/astronomical/astronom6.htm

    For a discussion on habitable zones.

    So far my impression is that if you throw a binary into the equation, you either have to have them very close together, so they act somewhat like a single gravitational mass, or one needs to be a distant companion. There will be fluctuations in the orbit with a close pair, but not appreciable. The key would be the amount of sunlight during their orbit, and how that cycle might affect life. Having a planet in an orbit such as the last one on that first link would be stable, but I'm still not sure how badly the habitable zone would move around. You certainly couldn't have any more planets in that system.

    The last link is very informative on how one might figure out where the habitable zone lies for a given star, once you figure out the luminosity. Your sun is a hotter star, so the HZ should be farther away than 1 AU to keep water liquid. this of course makes a 6 month orbit not possible. Which do you want to keep?

    Lastly, since your sun is hotter, it will burn out quicker...may not matter in your hypothetical situation, but life will only have a small window of opportunity to develop intelligence and leave the planet.

    These are just guesses on my part, from what I've read so far.
     
  12. TruthSeeker Fancy Virtual Reality Monkey Valued Senior Member

    Messages:
    15,162
    Tristan,

    Do you need to put it in a binary system? Cause if you do so, it will be harder to do... Anyways... try to do it in this order:
    1. Star(s)
    2. Location
    3. Planet variables
    4. Time variables
    5. Biosphere
    6. Medium of Life
    7. Life
    8. Characteristics of species
    9. How they inter-relate
      [/list=1]

      Star(s): Which kind? Red Giant, White Dwarf, etc... If two, what is the distance between them? Which kind each?

      Location: Which distance from the star?

      Planet variables: Which kind? Earth-like, Gas Giant, etc... The kind define the basic composition of the planet's elements. Does it has a satelite? How big? How far? How does it influence the planet?

      Time variables: How many hours has a day? How many hours of sunlight? What is the angle of its axis? How many days has an year? (Ignore months)

      Biosphere: Does it has protection against UV rays? What is its components (remember to put it into the planet's kind reality)?

      Medium of Life: Where does life occurs? Water, land, air, lava, magma, liquid nitrogen (pretty slow creatures...), ice, etc...

      Life: How is life? Divide it into Reigns (I hope you know how to divide it into categories...). You can also do philos, order, classes and species, but it's a lot of work. Reigns and Species are essential to know their caracteristics.

      Characteristics of species: Explain each creature. You don't need to show it (eventhough that would probably give you bonus marks, if you don't need to show it), but it is better to do it to see how can each species survive in your planet. Also pay attention to see wheter it could be created in the first place! You can put giant "turtles" in liquid nitrogen, but if you put them into lava, they will really die (just for information... life in liquid nitrogen is possible as long as the creatures are very slow. But if you put those creatures in a warm place, they will melt...)!!

      How they inter-relate: That is most probably the hardest to do (sorry...

      Please Register or Log in to view the hidden image!

      ). All your creatures should inter-relate. Unless they are in extreme opposites of the Life-web. Be careful who eats who and how. Mutualism is also advised, but not easy to do.

      Some hints:
      • As much Earth-like as easier to do.
      • Doing in this order you might find that you won't have to go back and change other things. This is the order of highest influence. This means that a White Dwarf planet will be extremely different then a Red Giant one.
      • Keep checking the variables and how all the system inter-relates. If you do this in the end, you might ghave bad surprises...
      • A lot of the astronomical variables are based on gravity and a lot of biological variables are based on light avaiability, radiation, medium and inter-relations between creatures.
      • Don't make the planet's history until you have the basics of it. Or maybe don't give a history at all. But if you do, first know your variables very well. You have always to maintain the basic data, or change it very scarcely. Don't make big changes, it is pretty hard because it involves a lot of data.

      That's no easy job... Good Luck...

      Please Register or Log in to view the hidden image!

     
    Last edited: Jan 12, 2003

Share This Page