Planets around Alpha Centauri

[aa_institute]

An article about the likely magnitudes and feasibility of terrestrial sized rocky planets orbiting in the habitable zones in the Alpha Centauri system:<br /><br />http://www.astroscience.org/abdul-ahad/ext...lar-planets.htm<br /><br /><br />AA<br />http://www.publishedauthors.net/aa_spaceagent/

 

[kdavis007]

The first link is showing page not found....

 

[jmilsom]

I wonder how many of us have dreamed about traveling to Alpha Centauri and being the first to lay eyes on its planetary system.<br /><br />Perhaps the best possibility we have of seeing what is there in the short term is the pinhole camera concept (if it ever gets off the ground). There is a thread on this forum.<br /><br />http://uplink.space.com/showflat.php?Cat=&Board=sciastro&Number=65281&page=&view=&sb=&o=&vc=1<br /><br />(BTW - your second link is to a SciFi book - the first link doesn't work. On this forum we'd prefer to discuss science rather than science fiction) <div class="Discussion_UserSignature"> </div>

 

[lunatio_gordin]

It's probably meant to be a sig link. <img src="/images/icons/tongue.gif" />

 

[aa_institute]

Oops... sorry that link just didn't get pasted properly:<br /><br />http://www.astroscience.org/abdul-ahad/extrasolar-planets.htm<br /><br /><br />A. Ahad<br />http://www.publishedauthors.net/aa_spaceagent/

 

[mental_avenger]

He is the author. <div class="Discussion_UserSignature"> <p style="margin-top:0in;margin-left:0in;margin-right:0in" class="MsoNormal"><font face="Times New Roman" size="2" color="#ff0000"><strong>Our Solar System must be passing through a Non Sequitur area of space.</strong></font></p> </div>

 

[aa_institute]

Well it's a funny thing when you get conflicting opinions from people. The sig link I've added on my posts that is. Half the people seem to say: "Always keep it on. It gives you free publicity for goodness sake, you need that as a newly published author with your first book." And the other half say: "Get rid of it. It looks too blatant and spammy. If your book's got any merit, it will sell itself."<br /><br />Can't please everyone, can you? <br /><br />AA<br />http://www.publishedauthors.net/aa_spaceagent/

 

[yevaud]

Just popping in for a moment...<br /><br /><i>Perhaps the best possibility we have of seeing what is there in the short term is the pinhole camera concept (if it ever gets off the ground). There is a thread on this forum.</i><br /><br />Personally, I think the long-baseline space telescope concept is even better than that.<br /><br />Concept (already discussed by NASA): two space-based telescopes similar to Hubble...but located at the extreme possible distance from each other (One in orbit, one in a Lagrange point?).<br /><br />Imagine the baseline that gives. <div class="Discussion_UserSignature"> <p><em>Differential Diagnosis:  </em>"<strong><em>I am both amused and annoyed that you think I should be less stubborn than you are</em></strong>."<br /> </p> </div>

 

[nexium]

The habital zone for Centauri A is about 100 million miles from the star. For Centauri B about 80 million kilometers from the star. For Centarii C, about one million kilometers from the photosphere of the star, and likely tide locked. A big CME = corronal mass ejection from C could give new meaning to deadly, but inhabitants on the unlighted side have a good chance of survival, if they don't freeze to death. The C planet needs to be inside the roache limit, so it might crumble into a ring without notice.<br />My guess is all three are reasonably stable orbits, if close to circular, but not much farther from the respective stars. Neil

 

[jatslo]

I doubt that a star is required to sustain heat.

 

[nexium]

jatso please explain.The sun delivers about a million times more energy to the surface of Earth than the hot interior of Earth. In our solar system, only the sun and the 4 gas giant planets have hotter centers than Earth? Neil