Apech Posted January 12, 2012 BBC website Astronomers have determined exactly what colour our home galaxy the Milky Way is - and find it is aptly named.While it appears white from Earth, that is literally a trick of the light; the question is how it looks from outside. A comparison of star types in other galaxies gives perhaps an unsurprising result: white. But not just any white: specifically, like spring snow at an hour after sunrise or before sunset. Share this post Link to post Share on other sites
Marblehead Posted January 12, 2012 Just a few days ago on some documentary program the folks spoke of the different star colors that result due to the stars' individual mass and burn rate. Share this post Link to post Share on other sites
Apech Posted January 12, 2012 <br>Just a few days ago on some documentary program the folks spoke of the different star colors that result due to the stars' individual mass and burn rate.<br><br><br>Yes, it says the colours are about the age of the stars and what sequence they are in.<br><br>There was another article the other day - which I didn't post which said that nearly all stars are now thought to have planets ... which means a lot of earth type planets out there.<br><br>If only we could boldly go ... that would be exciting ...<br> Share this post Link to post Share on other sites
joeblast Posted January 12, 2012 The mass actually determines the burn rate Share this post Link to post Share on other sites
Marblehead Posted January 12, 2012 The mass actually determines the burn rate What's that saying? The bigger they are the harder they fall, or, in this case, the bigger (more massive) they are the faster they burn. "... which said that nearly all stars are now thought to have planets ..." I saw something a couple days ago that suggested that there are more planets, collectively, than there are stars and there are billions of billions of stars. I can't count that high. Share this post Link to post Share on other sites
joeblast Posted January 12, 2012 Increased P increases T IMO not surprised at that conclusion except in places where stars are being formed by 'relatively' pure clouds of hydrogen. "In no model" does 100% of the material coalesce. Share this post Link to post Share on other sites
Apech Posted January 12, 2012 Exoplanets are around every star, study suggests Actually they seem to be saying every star! But that's every kind of planet ... mostly gas giants? Share this post Link to post Share on other sites
joeblast Posted January 12, 2012 Given the relative abundances of certain gases, naturally Share this post Link to post Share on other sites
Marblehead Posted January 13, 2012 But don't give up on many earth-like planets yet. Those are much harder to detect than are the big boys. Share this post Link to post Share on other sites
Apech Posted January 13, 2012 Life, but not as we know it, Jim. Share this post Link to post Share on other sites
Marblehead Posted January 13, 2012 Life, but not as we know it, Jim. Oh, I'm not into predicting things of the future. Liquid water and oxygen would be necessary for life forms similar to what is found on earth. Who knows what other possibilities might exist within different conditions? Share this post Link to post Share on other sites
zanshin Posted January 14, 2012 Interesting. I like eating Milky Ways too. Share this post Link to post Share on other sites
Marblehead Posted January 14, 2012 Interesting. I like eating Milky Ways too. Which reminds me, it is time for me to buy more chocolate the next time I go to the store. Share this post Link to post Share on other sites
