General
25 Apr 07
25 Apr 07
1 edit
Originally posted by ArrakisWell screw global warming then...we better get ourselves closer to that big yellow ball of goo...
2) the red dwarf star will outlast our sun.
Again, it's my unders was once a star like our own sun and that eventually our sun will become a red dwarf star.
Or whatever it's made from.
25 Apr 07
Originally posted by ArrakisWell, look.
I don't agree with two of your statements. I admit that I may be wrong, but when you make a statement please show us a url to back it up. Here's the two statements I don't agree with:
1) 95% of stars are smaller than our own sun.
It's my understanding that this is entirely wrong.
2) the red dwarf star will outlast our sun.
Again, it's my unders ...[text shortened]... was once a star like our own sun and that eventually our sun will become a red dwarf star.
1) If 20 of the 30 closest stars to us are red dwarfs, then it stands to reason that there are an awful lot of them out there. It wouldn't surprise me at all if most stars were smaller than our sun. Now 95%? I dunno, but I'd agree that most stars are smaller than ours.
2) It's because of the way that the red dwarfs burn their hydrogen. It takes way longer for them to burn through their hydrogen supply than our star does. It's also my understanding that red dwarfs are fully convective (allowing them to burn more of their hydrogen before leaving the main sequence) and they also emit very little light, compared to our sun. Generally speaking, the lower the stellar mass, the longer their lifespan. Also, our sun is destined to eventually become a red giant, not a red dwarf.
26 Apr 07
Originally posted by SuzianneI don't agree most suns are smaller, since our sun is considered a 'middle sized star'.
Well, look.
1) If 20 of the 30 closest stars to us are red dwarfs, then it stands to reason that there are an awful lot of them out there. It wouldn't surprise me at all if most stars were smaller than our sun. Now 95%? I dunno, but I'd agree that most stars are smaller than ours.
The sun is large: If the sun were hollow a million earths would fit inside... and yet, it is only a middle sized star.
P-
26 Apr 07
Originally posted by PhlabibitTo be honest, we're all talking out of our backsides! Telescopes and shifts in light?? We don't even know what grey matter is, so in effect we don't even know what affect "that" has on what 'perceive' we see, and yet we say 90% of the universe is made of grey matter....... what we actually know is sweet TOSH!
I don't agree most suns are smaller, since our sun is considered a 'middle sized star'.
The sun is large: If the sun were hollow a million earths would fit inside... and yet, it is only a middle sized star.
http://www.youtube.com/watch?v=Oyz7e8iQ6Uo
P-
-m
26 Apr 07
1 edit
Originally posted by PhlabibitBeing a 'middle size star' only says that we're about halfway between the largest and the smallest. It doesn't say anything about the mean. I still say most stars are smaller than the sun. Logic would agree, since a star's lifespan is directly tied to how small it is. Smaller stars have a longer lifespan than larger ones.
I don't agree most suns are smaller, since our sun is considered a 'middle sized star'.
The sun is large: If the sun were hollow a million earths would fit inside... and yet, it is only a middle sized star.
http://www.youtube.com/watch?v=Oyz7e8iQ6Uo
P-
Edit: nice video 🙂
26 Apr 07
Originally posted by PhlabibitHere is a link showing what may happen to our sun. The gist of it is there is no red dwarf stage.
I don't agree most suns are smaller, since our sun is considered a 'middle sized star'.
The sun is large: If the sun were hollow a million earths would fit inside... and yet, it is only a middle sized star.
http://www.youtube.com/watch?v=Oyz7e8iQ6Uo
P-
http://www.enchantedlearning.com/subjects/astronomy/sun/sundeath.shtml
26 Apr 07
Originally posted by mikelomLike I said......... all talking about what maybe...... or what is thought! or You-tubing or wiki-ing
To be honest, we're all talking out of our backsides! Telescopes and shifts in light?? We don't even know what grey matter is, so in effect we don't even know what affect "that" has on what 'perceive' we see, and yet we say 90% of the universe is made of grey matter....... what we actually know is sweet TOSH!
-m
Why bother until you have facts??.......bla bla bla.....
boring!
Even Hawking has changed his mind every year as to whether or not he believes in God........ TOSH!
We'll either meet it or we won't! So dream on about having an affect on 5Bn years in the future....... our arse methane will be across the universe........ forget it!
26 Apr 07
Originally posted by mikelomI think your hat might be a bit too tight.
Like I said......... all talking about what maybe...... or what is thought! or You-tubing or wiki-ing
Why bother until you have facts??.......bla bla bla.....
boring!
Even Hawking has changed his mind every year as to whether or not he believes in God........ TOSH!
We'll either meet it or we won't! So dream on about having an affect on 5Bn years in the future....... our arse methane will be across the universe........ forget it!
P-
26 Apr 07
Originally posted by mikelommaybe 90% fo your universe is grey matter... but in our universe it is "dark energy" 😉
To be honest, we're all talking out of our backsides! Telescopes and shifts in light?? We don't even know what grey matter is, so in effect we don't even know what affect "that" has on what 'perceive' we see, and yet we say 90% of the universe is made of grey matter....... what we actually know is sweet TOSH!
-m
26 Apr 07
Originally posted by SuzianneI was searching the web to find the difference between a red dwarf star and a giant red star and ran across this really neat site:
Well, look.
1) If 20 of the 30 closest stars to us are red dwarfs, then it stands to reason that there are an awful lot of them out there. It wouldn't surprise me at all if most stars were smaller than our sun. Now 95%? I dunno, but I'd agree that most stars are smaller than ours.
2) It's because of the way that the red dwarfs burn their hydrogen. ...[text shortened]... heir lifespan. Also, our sun is destined to eventually become a red giant, not a red dwarf.
http://www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml
27 Apr 07
Originally posted by ArrakisThey seem to want money though and what I read seemed to be mostly USA today versions of science.
I was searching the web to find the difference between a red dwarf star and a giant red star and ran across this really neat site:
http://www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml
BTW, Second Earth V So you still think we're alone is running 55 to 71. You better spruce it up here or you will be left behind🙂
27 Apr 07
Originally posted by prosoccerWow, 6 decimal place accuracy too....
Don't worry, at the highest conventional space probe speed I could find it would only take 342, 887 years for the probe to get to the new planet. We will know very shortly what is going on there.
Actually we will know a lot more about the place long before we can send probes there.