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Theme Changer

 Topic: Orange stars are just right for life

 (Read 6440 times)
  • 1« Previous thread | Next thread »
  • Orange stars are just right for life
     OP - May 07, 2009, 08:34 AM

    Looks like the odds of finding habitable planets just got a lot better.  dance
    Not that we can move to them anytime soon, of course, so they'll be safe from dawahganda for a while.  grin12

    Orange stars are just right for life

    The universe's best real estate for life may be around stars a little less massive than the sun, called orange dwarfs, according to a new analysis. These stars live much longer than sun-like stars, and have safer habitable zones ? where liquid water can exist ? than those of lighter red dwarf stars.

    Stars similar in mass to the sun, categorised as a yellow dwarf, have received the most attention from planet hunters. But recent research suggests orange dwarfs may provide an even better hunting ground for life-bearing planets.

    <snip>

    Orange dwarfs, on the other hand, with masses between 50 and 80% that of the sun, have only a little bit more flare activity than sun-like stars. They would also provide a haven for life for a much longer time ? roughly double the 10-billion-year lifetime of a sun-like star.

    Moreover, they change very little in brightness compared to sun-like stars. Our own sun has brightened by about 30% since the solar system began, and will likely make Earth too hot for life in about 1 billion years, even though the sun will still have about 5 billion years of fuel left to burn.

    <snip>

    Orange dwarfs are about three to four times as abundant as sun-like stars, making planet searches easier. Indeed, some planets have already been found around orange dwarfs, though outside the stars' habitable zones.

    Complete article here.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Orange stars are just right for life
     Reply #1 - May 07, 2009, 09:18 AM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.

    Inhale the good shit, exhale the bullshit.
  • Re: Orange stars are just right for life
     Reply #2 - May 07, 2009, 09:28 AM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.


    impossible for a time machine to exist - if you created a time-machine you would go back in to the past and tell yourself how it is made, so technically a time machine should always exist. Its a paradox.
  • Re: Orange stars are just right for life
     Reply #3 - May 07, 2009, 09:34 AM

    Maybe one already does, you're just not to be let in on the secret. Tongue

    I chose to get circumcised at 17, don't tell me I never believed.
  • Re: Orange stars are just right for life
     Reply #4 - May 07, 2009, 10:28 AM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.


    impossible for a time machine to exist - if you created a time-machine you would go back in to the past and tell yourself how it is made, so technically a time machine should always exist. Its a paradox.


    I don't remember asking you to rain on my fantasies.  Tongue

    Inhale the good shit, exhale the bullshit.
  • Re: Orange stars are just right for life
     Reply #5 - May 07, 2009, 10:53 AM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.


    impossible for a time machine to exist - if you created a time-machine you would go back in to the past and tell yourself how it is made, so technically a time machine should always exist. Its a paradox.


    I don't remember asking you to rain on my fantasies.  Tongue


    Wud be kinda cool tho eh??
  • Re: Orange stars are just right for life
     Reply #6 - May 07, 2009, 11:01 AM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.


    impossible for a time machine to exist - if you created a time-machine you would go back in to the past and tell yourself how it is made, so technically a time machine should always exist. Its a paradox.

    Nope. That assumes that someone actually does go back and tell earlier people how to build it, and it also assumes earlier people have the technology to build it. Bodgey assumptions. Not much of a paradox there.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Orange stars are just right for life
     Reply #7 - May 07, 2009, 11:51 AM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.


    impossible for a time machine to exist - if you created a time-machine you would go back in to the past and tell yourself how it is made, so technically a time machine should always exist. Its a paradox.

    Nope. That assumes that someone actually does go back and tell earlier people how to build it, and it also assumes earlier people have the technology to build it. Bodgey assumptions. Not much of a paradox there.


    Early people? Say you spent 30 years of your life making a time machine, and you finally make one, you telling me you would not go 30 years back and tell yourself how it is made? Also what if you go back and kill your granddad as a child?

    I have found something:
    http://www.youtube.com/watch?v=oRWwI61so5Q

    Pretty much what I said.
  • Re: Orange stars are just right for life
     Reply #8 - May 07, 2009, 11:57 AM



    Early people? Say you spent 30 years of your life making a time machine, and you finally make one, you telling me you would not go 30 years back and tell yourself how it is made? Also what if you go back and kill your granddad as a child?




    No, everything in my life that would have led to my desire to create a time machine to go back and change something would not exist if I did seek to go back and change that critical moment, therefore the time machine would never have been invented.

    The only way I would want to go back and change things is through some kind of wish.

    If I had a time machine I only want to go forward, there is nothing behind me that appeals anymore.

    I used to want to go back and see so many things, but that was back when I idealised certain periods of time without a greater understanding of the social climate of each time period.

    With that knowledge now, I would rather not risk going back to a time where I had no rights based on my gender. Or taken down as a witch for my knowledge.  Cheesy

    No mate, it's all forward.

    The future is bright, the future is orange.  Cheesy

    Inhale the good shit, exhale the bullshit.
  • Re: Orange stars are just right for life
     Reply #9 - May 07, 2009, 12:02 PM

    No, Tut. It isn't pretty much what you said at all.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Orange stars are just right for life
     Reply #10 - May 07, 2009, 12:11 PM

    http://www.youtube.com/watch?v=SafwXdP7ylc&feature=related
  • Re: Orange stars are just right for life
     Reply #11 - May 07, 2009, 12:19 PM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.


    impossible for a time machine to exist - if you created a time-machine you would go back in to the past and tell yourself how it is made, so technically a time machine should always exist. Its a paradox.

    It could create an alternate timeline with an altered future.
  • Re: Orange stars are just right for life
     Reply #12 - May 07, 2009, 12:26 PM



    Early people? Say you spent 30 years of your life making a time machine, and you finally make one, you telling me you would not go 30 years back and tell yourself how it is made? Also what if you go back and kill your granddad as a child?




    No, everything in my life that would have led to my desire to create a time machine to go back and change something would not exist if I did seek to go back and change that critical moment, therefore the time machine would never have been invented.

    The only way I would want to go back and change things is through some kind of wish.

    If I had a time machine I only want to go forward, there is nothing behind me that appeals anymore.

    I used to want to go back and see so many things, but that was back when I idealised certain periods of time without a greater understanding of the social climate of each time period.

    With that knowledge now, I would rather not risk going back to a time where I had no rights based on my gender. Or taken down as a witch for my knowledge.  Cheesy

    No mate, it's all forward.

    The future is bright, the future is orange.  Cheesy


    I would go back and live in the middle ages as a king or something. I just think I was born in the wrong time period. I am thinking, Punjab 1206 having a large empire a large army and lots of harems, I liked the concept of harems.
  • Re: Orange stars are just right for life
     Reply #13 - May 07, 2009, 12:34 PM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.


    impossible for a time machine to exist - if you created a time-machine you would go back in to the past and tell yourself how it is made, so technically a time machine should always exist. Its a paradox.

    http://www.youtube.com/watch?v=x8w95xIdH4o
  • Re: Orange stars are just right for life
     Reply #14 - May 07, 2009, 12:40 PM



    I would go back and live in the middle ages as a king or something. I just think I was born in the wrong time period. I am thinking, Punjab 1206 having a large empire a large army and lots of harems, I liked the concept of harems.


    I find it funny that you think you would be at the top of the food chain back then, for all you know the only way you could end up in a harem is as a eunuch.  Cheesy

    Inhale the good shit, exhale the bullshit.
  • Re: Orange stars are just right for life
     Reply #15 - May 07, 2009, 12:42 PM



    I would go back and live in the middle ages as a king or something. I just think I was born in the wrong time period. I am thinking, Punjab 1206 having a large empire a large army and lots of harems, I liked the concept of harems.


    I find it funny that you think you would be at the top of the food chain back then, for all you know the only way you could end up in a harem is as a eunuch.  Cheesy

    Well, let's face it. He's pretty much used to that.  Wink

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Orange stars are just right for life
     Reply #16 - May 07, 2009, 02:25 PM



    I would go back and live in the middle ages as a king or something. I just think I was born in the wrong time period. I am thinking, Punjab 1206 having a large empire a large army and lots of harems, I liked the concept of harems.


    I find it funny that you think you would be at the top of the food chain back then, for all you know the only way you could end up in a harem is as a eunuch.  Cheesy


    I would have a time machine, and I would make sure I am a king! or some kind of incarnation of god.
  • Re: Orange stars are just right for life
     Reply #17 - May 07, 2009, 07:59 PM

    I wish I had a time machine, I would dive ahead to the day where travelling to any new planets around one of those stars was possible.  I feel like I am missing out.


    impossible for a time machine to exist - if you created a time-machine you would go back in to the past and tell yourself how it is made, so technically a time machine should always exist. Its a paradox.


    I don't remember asking you to rain on my fantasies.  Tongue


    Why not a stargate?  That is much more likely than a time machine and you'd get the added benefit of being able to come back home to share what you saw.



  • Re: Orange stars are just right for life
     Reply #18 - May 07, 2009, 08:04 PM



    I would go back and live in the middle ages as a king or something. I just think I was born in the wrong time period. I am thinking, Punjab 1206 having a large empire a large army and lots of harems, I liked the concept of harems.


    I find it funny that you think you would be at the top of the food chain back then, for all you know the only way you could end up in a harem is as a eunuch.  Cheesy


    I would have a time machine, and I would make sure I am a king! or some kind of incarnation of god.


    What do you suppose would happen if some of your technology broke or failed to work just the way you had planned?

  • Re: Orange stars are just right for life
     Reply #19 - May 07, 2009, 08:15 PM



    I would go back and live in the middle ages as a king or something. I just think I was born in the wrong time period. I am thinking, Punjab 1206 having a large empire a large army and lots of harems, I liked the concept of harems.


    I find it funny that you think you would be at the top of the food chain back then, for all you know the only way you could end up in a harem is as a eunuch.  Cheesy


    I would have a time machine, and I would make sure I am a king! or some kind of incarnation of god.


    What do you suppose would happen if some of your technology broke or failed to work just the way you had planned?




    Go back in time, but if it broke completely, then I'd find other ways of getting into power, remember I would still be able very smart, as I am coming from the future, I would know scientific things.
  • Re: Orange stars are just right for life
     Reply #20 - May 07, 2009, 09:33 PM



    I would go back and live in the middle ages as a king or something. I just think I was born in the wrong time period. I am thinking, Punjab 1206 having a large empire a large army and lots of harems, I liked the concept of harems.


    I find it funny that you think you would be at the top of the food chain back then, for all you know the only way you could end up in a harem is as a eunuch.  Cheesy


    I would have a time machine, and I would make sure I am a king! or some kind of incarnation of god.


    What do you suppose would happen if some of your technology broke or failed to work just the way you had planned?




    Go back in time, but if it broke completely, then I'd find other ways of getting into power, remember I would still be able very smart, as I am coming from the future, I would know scientific things.


    Personally, I think you would be in seriously deep shit.  Just for starters:

    Could you build a time machine from scratch?  This means you would have to smelt, purify, and shape metals, make all kinds of chemicals (plastics, oil, etc) from whatever raw ingredients you could find, the machine would definitely need a power source (probably a big one - this means engines and generators - could you make a nuclear reactor?), something to control it all with (a computer of some sort), and whatever it is in a time machine that makes it travel through time.

    Now to do all this, you would have to master skills entirely unrelated to those needed to make a time machine:  You'd need a place to work, so you would have to know how to build a laboratory and workshop.  Starting with "cut down this tree" and "dig that rock out of the ground".  You'd have to make all kinds of tools.  Hell, you'd have to make the tools that allow you to make the tools that allow you to make the tools....through many levels of ever-increasing sophistication and differentiation.

    Now think about how you are going to feed yourself.  You better wear that mantle of godhood wisely, because otherwise (assuming you're not already dead), you'd be spending most of your time farming.  It is much better to let the yokels feed you.

    Another important thing is medicine.  Could you make whatever medicines you might need, either for disease or to manage a condition (like diabetes)?

    Actually, if you were to recreate technology like this, and share it (appropriately I would hope) with the yokels you would like to lord it over, you most likely would be some sort of demigod (and wallowing in more pussy than you could handle).

    Speaking of pussy, there's the psychological issues involved.  What would you do for companionship?   Really.  Think about it:  You're "way back when" with all your knowledge and the adults around you wouldn't know half as much as one of today's 6 year olds.  They would know what they needed to do in order to survive (things that you probably not know, like farming, animal husbandry, etc).  Conversation would be boring most of the time.

    But in any population, there would be superior individuals that you would want to attract to your cause, so you would need the people skills to attract them.

    Just for shits and grins, go read something about the history of technological development.  Find about where all the stuff you take for granted came from.   Then, if you notice any patterns, find out something about the societies that produced all the neat discoveries and toys.

    Mr Google knows all.
  • Re: Orange stars are just right for life
     Reply #21 - May 07, 2009, 09:41 PM

    I don't have to make anything, remember I come from the future. I would know about atoms, orbits, I could make predictions of historical events, it would be a good idea to firstly go into the future get some kind of plasma weapon and superior armour, and then go back into the middle ages. I could have some kind of weapon.
  • Re: Orange stars are just right for life
     Reply #22 - May 07, 2009, 09:46 PM

    I don't think you can travel into the future - the future has no happened potentially you can travel at the speed of light and "freeze" in time, or you could travel faster that you would start going backwards, but according to the laws nothing can travel faster then the speed of light it would violate laws of physics it is no possible, the only thing you could do is travel as fast as the speed of light and freeze time, you would stop ageing, remember time is relevant.       
  • Re: Orange stars are just right for life
     Reply #23 - May 07, 2009, 09:52 PM

    I don't think you can travel into the future - the future has no happened potentially you can travel at the speed of light and "freeze" in time, or you could travel faster that you would start going backwards, but according to the laws nothing can travel faster then the speed of light it would violate laws of physics it is no possible, the only thing you could do is travel as fast as the speed of light and freeze time, you would stop ageing, remember time is relevant.       


    I think you'd have better luck with cryopreservation.

  • Re: Orange stars are just right for life
     Reply #24 - May 07, 2009, 10:34 PM

    I don't think you can travel into the future - the future has no happened potentially you can travel at the speed of light and "freeze" in time, or you could travel faster that you would start going backwards, but according to the laws nothing can travel faster then the speed of light it would violate laws of physics it is no possible, the only thing you could do is travel as fast as the speed of light and freeze time, you would stop ageing, remember time is relevant.       

    Time may freeze, your watch would not stop nor would your body clock

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  • Re: Orange stars are just right for life
     Reply #25 - May 07, 2009, 10:43 PM

    Time would only freeze from the perspective of an outside observer. You would not notice any difference in your lifespan.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Orange stars are just right for life
     Reply #26 - May 07, 2009, 11:15 PM

    Time would only freeze from the perspective of an outside observer. You would not notice any difference in your lifespan.


    No, actually you would not age, if you travelled at the speed of light. You internal "clock" would slow down. Particles decay slowly the faster you are travailing, this is called time dilation.

    Edit* yeah you are right but it would only be noticeable to an outside observer. You would live longer if you used another inertial frame of reference such as on earth, while you were moving across the galaxy at the speed of light, if you came back things on the earth would have aged quicker, from outside inertial frame of references particles decay slower.
  • Re: Orange stars are just right for life
     Reply #27 - May 07, 2009, 11:19 PM

    See:
    http://www.youtube.com/watch?v=SIfRZhztNos
  • Re: Orange stars are just right for life
     Reply #28 - May 08, 2009, 08:41 AM

    Hello King Tut,

    I don't think you can travel into the future

    Probably not.

    Quote
    - the future has no happened

    Putting aside the language issues here, there is no way for us to know if the future has not already happened in another universe. There are compelling arguments that the arrow of time is unidirectional, and hence you are right here (if those arguments are right).

    Quote
    potentially you can travel at the speed of light and "freeze" in time, or you could travel faster that you would start going backwards,

    Travelling faster than light (FTL) does not imply going backwards in time, but depending on the vectors involved,  backwards time travel is possible if FTL is possible. A very very very big if, especially for massed objects.

    This reminds of the Star Trek movie where they went around the Sun to travel back in time to Earth to find some long dead whales. I always thought... why not just warp out to some distant star, pilot away from earth, and then warp back to earth. The vectors involved would achieve the same result and with much more plausible mathematics. But not as dramatic as engaging a sling shoting the Sun. What real reason using the Sun as a gravitational source to slingshot escapes me, other than to gain speed. But it is not just the speed you gain that gives you time travel. You actually need to use the speed to go somewhere else FTL, and then come back non-instantaneously.

    Quote
    but according to the laws nothing can travel faster then the speed of light it would violate laws of physics it is no possible, the only thing you could do is travel as fast as the speed of light and freeze time, you would stop ageing, remember time is relevant.       

    Yeah... I've always wondered this. If you travel NEAR the speed of light, then in your frame of reference you would just simply age normally but outside observers would view that your clock has slowed dramatically. But the maths for massed objects at the speed of light involves infinities and hence it is compelling to think that if an object with mass were to travel AT the speed of light, then time absolutely stops for that object. That is why objects with mass cannot travel AT the speed of light, according to current mathematics. But your assertion that time stops AT the speed of light I agree with.

    This leaves an whimsical question: what does a photon do with a clock?

    Cheers
    R


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