10-17-2007, 01:37 PM
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#61
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Norm!
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Knowing our luck its the Capital planet for the Thetan's
Or the Corporate Head Office for the Spaceballs.
Either way, we're either going to lose our air, or our minds.
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My name is Ozymandias, King of Kings;
Look on my Works, ye Mighty, and despair!
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10-17-2007, 02:00 PM
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#62
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Not a casual user
Join Date: Mar 2006
Location: A simple man leading a complicated life....
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Quote:
Originally Posted by CaptainCrunch
Knowing our luck its the Capital planet for the Thetan's
Or the Corporate Head Office for the Spaceballs.
Either way, we're either going to lose our air, or our minds.
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Or maybe it's the Borg. Quietly waiting for the perfect opportunity to assimilate us. 
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10-17-2007, 02:02 PM
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#63
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Lifetime Suspension
Join Date: Oct 2007
Location: In my secrete volcano lair.
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I will use this new Earth as a staging point to build my new "laser".
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10-17-2007, 02:30 PM
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#64
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Franchise Player
Join Date: Aug 2005
Location: Calgary, Alberta
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To Whom It May Concern:
We should be careful, Xenu had control of 79 planets, and he might be living on this exact planet. Sure, the Loyal Officers of the Marcab Confederation finally discovered how evil he was and overthrew him and is now locked away in a mountain on one of the planets and kept in by a force-field powered by an eternal battery. But that doesn't mean he couldn't escape, and I want to continue eating placentas freely.
Yours,
Tom
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10-17-2007, 02:33 PM
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#65
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#1 Goaltender
Join Date: Oct 2001
Location: Calgary Satellite Community
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Sorry but this thread really needs one of these.... 
BTW, the only lightyear that is discussed in any frequency in my home is this one...
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10-17-2007, 02:41 PM
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#66
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Powerplay Quarterback
Join Date: Feb 2007
Location: Calgary
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Quote:
Originally Posted by ken0042
- Gravity. Keep in mind it's based on mass; not volume. [...] If you still have issues with my mass vs volume example; think of it this way- I'm going to throw a ball at your head and it's going to hit your head at 25 mph. Would you rather I throw a beachball, or a snooker ball? (One has more volume; one has more mass)
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Quote:
Originally Posted by CaptainCrunch
In all of this talk about going to Mars and lightspeed, shouldn't we focus on actually putting a man on the moon first?
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hehe - both these lines made me laugh...
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10-17-2007, 03:00 PM
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#67
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Scoring Winger
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Quote:
Originally Posted by Dion
Or maybe it's the Borg. Quietly waiting for the perfect opportunity to assimilate us. |
Then won't they be surprised when they invade earth only to be assimilated by Microsoft.
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10-17-2007, 05:23 PM
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#68
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#1 Goaltender
Join Date: Nov 2002
Location: Richmond, BC
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Quote:
Originally Posted by badnarik
The question "How many light years is mars away?" indicates that the person asking knew it was a measure of distance.
What is the proper way to measure the distance to Mars?
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Realistically, in kilometres.
Ideally, in Astronomical Units.
1 AU = Mean Earth-Sun Distance = 1.5E11m
__________________
"For thousands of years humans were oppressed - as some of us still are - by the notion that the universe is a marionette whose strings are pulled by a god or gods, unseen and inscrutable." - Carl Sagan
Freedom consonant with responsibility.
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10-17-2007, 05:24 PM
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#69
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Missed the bus
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So if this planet is 1.5 times the size of ours, would it be a different gravity? Would it be 1.5 times as much gravity or does it spin on its axis faster (centrifugal force)?
Hmmmm....
EDIT: Answered my own question (from wiki)
Quote:
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If it is a rocky planet with a large iron core, Gliese 581 c has a radius approximately 50% larger than that of Earth, according to Udry's team.[7][8] Gravity on such a planet's surface would be approximately 2.24 times as strong as on Earth.
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What would this mean if human like life were to grace the planet? Or if people were to go there, I wonder what effects it would have on our system if all other factors were equal to Earth?
Last edited by alltherage; 10-17-2007 at 05:29 PM.
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10-17-2007, 05:37 PM
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#70
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#1 Goaltender
Join Date: Nov 2002
Location: Richmond, BC
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Quote:
Originally Posted by ken0042
- Gravity. Keep in mind it's based on mass; not volume. I forget the exact numbers, but Jupiter is about 1000 times the volume of Earth. But the gravity is only about 10 times our own. So this planet having 1.5 times the volume may have as much or even less gravity. If their core is aluminum instead of iron like Earth's, it could have less mass. If you still have issues with my mass vs volume example; think of it this way- I'm going to throw a ball at your head and it's going to hit your head at 25 mph. Would you rather I throw a beachball, or a snooker ball? (One has more volume; one has more mass)
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It's really based on both mass and volume. The farther you are away from the centre of the body (higher volume), the lower the gravity, and the more massive the object, the higher the gravity. And the quantity that relates these mass and volume is the reason for Jupiter's (relatively) weak gravity. This quantity is density, equal to M/V.
Given density = p; G=constant of gravitation; R=radius:
g = 4πGpR/3
__________________
"For thousands of years humans were oppressed - as some of us still are - by the notion that the universe is a marionette whose strings are pulled by a god or gods, unseen and inscrutable." - Carl Sagan
Freedom consonant with responsibility.
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10-17-2007, 05:41 PM
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#71
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Franchise Player
Join Date: Jun 2005
Location: Hell
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not that far away..just find a wormhole
__________________
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10-17-2007, 06:02 PM
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#72
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Official CP Photographer
Join Date: Sep 2003
Location: PL15
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Wow, how exciting!
If its a red dwarf, one would have to assume the star is much older than our sun and is closer to dying. If there is life there, we can assume that it has been around and maybe more evolved than we are. I wonder if there is any to confirm if there actually is liquid water there. What kind of instruments do we have that can do that right now?
I really hope in my lifetime we can confirm extraterrestrial life.
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10-17-2007, 06:11 PM
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#73
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Threadkiller
Join Date: Oct 2003
Location: 51.0544° N, 114.0669° W
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10-17-2007, 06:17 PM
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#74
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Scoring Winger
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I just about **** my pants after reading this. I know what a light year is and generally consider myself to be pretty smart but don't aspire to be an astrophysicist, rocket scietist or anything of that nature. I can appreciate that you do, but I suggest that you tone down the arrogance as there will be many times within your lifetime that you will be the one asking the "stupid" question. Hopefully the person answering the question has the maturity so not to belittle you.
Quote:
Originally Posted by evman150
What's fundamental is not that he doesn't know what a light year is. I don't expect society to know the definition of a light year.
All I'm hoping for is an appreciation of the distance. The appreciation that light travels really fast. And that a light year is a really long distance.
Asking how many light years away Mars is shows a gross misunderstanding of the concept.
Again, I apologize to the guy this is seemingly directed at. You are but one case of a problem that is no doubt endemic in our society.
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10-17-2007, 06:18 PM
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#75
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#1 Goaltender
Join Date: Nov 2002
Location: Richmond, BC
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Quote:
Originally Posted by Neeper
If its a red dwarf, one would have to assume the star is much older than our sun and is closer to dying.
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Much older than the Sun? Maybe, maybe not.
Closer to dying? No. Red dwarfs live for hundreds of billions of years, even trillions.
A red dwarf is a main sequence star, just like the Sun. It is not to be confused with dying stars like red giants and red supergiants.
This is called a H-R Diagram. The curve in the middle is the main sequence. Anything not on the curve (the main sequence supergiants like Rigel and Deneb but not as far over as Betelgeuse are considered on the curve) is a dying star (giants) or degenerate remnant (white dwarfs). As you can see, both the Sun and the red dwarfs are on the curve, main sequence stars.
__________________
"For thousands of years humans were oppressed - as some of us still are - by the notion that the universe is a marionette whose strings are pulled by a god or gods, unseen and inscrutable." - Carl Sagan
Freedom consonant with responsibility.
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10-17-2007, 06:23 PM
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#76
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#1 Goaltender
Join Date: Nov 2002
Location: Richmond, BC
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Quote:
Originally Posted by IGGYRULES
I just about **** my pants after reading this. I know what a light year is and generally consider myself to be pretty smart but don't aspire to be an astrophysicist, rocket scietist or anything of that nature. I can appreciate that you do, but I suggest that you tone down the arrogance as there will be many times within your lifetime that you will be the one asking the "stupid" question. Hopefully the person answering the question has the maturity so not to belittle you.
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And if I don't know something I should know, that is society's fault as well.
Hell, I didn't know who Tommy Douglas was until I was 17. Was that my fault? Or the school system's fault?
I don't deserve to be belittled for not knowing who Tommy Douglas is, this guy doesn't deserve to be belittled for not knowing what a light year is. But the system does deserve to be belittled, for these are both facts everyone should have learned.
__________________
"For thousands of years humans were oppressed - as some of us still are - by the notion that the universe is a marionette whose strings are pulled by a god or gods, unseen and inscrutable." - Carl Sagan
Freedom consonant with responsibility.
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10-17-2007, 06:28 PM
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#77
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Franchise Player
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So, how far/ how long would it take us to travel just 1 light year in space?
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10-17-2007, 06:35 PM
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#78
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Scoring Winger
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Who determines what we should know? Why should someone know what a lightyear is? How are they going to benefit society by knowing this? How will knowing this help them throughout their life? There are more severe problems that society and the school system in general need to address other than who was Tommy Douglas and the definition of a light year.
Quote:
Originally Posted by evman150
And if I don't know something I should know, that is society's fault as well.
Hell, I didn't know who Tommy Douglas was until I was 17. Was that my fault? Or the school system's fault?
I don't deserve to be belittled for not knowing who Tommy Douglas is, this guy doesn't deserve to be belittled for not knowing what a light year is. But the system does deserve to be belittled, for these are both facts everyone should have learned.
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10-17-2007, 06:42 PM
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#79
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First Line Centre
Join Date: Dec 2006
Location: Wherever the cooler is.
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Meh, I don't know what a light year is...hell I don't think it's even come up in any class I've taken this year or last. I'm not too concerned that I don't know how far away Mars is...
On a more freaky note....what if WE were the aliens??? Gives me the heebie-jeebies....
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10-17-2007, 06:49 PM
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#80
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Playboy Mansion Poolboy
Join Date: Apr 2004
Location: Close enough to make a beer run during a TV timeout
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Quote:
Originally Posted by Berger_4_
On a more freaky note....what if WE were the aliens??? Gives me the heebie-jeebies....
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Quite possible. 65 million years ago on Earth, the only reason the primative mammals were able to thrive was the extinction of the dinosaurs. Assuming another planet had a similar evolutionary path, and didn't have the same type of asteroid crash, we could be dealing with reptiles as the intelligent life form. Earth could be the exception in the galaxy with mammals as the most intelligent forms of life.
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