Interstellar Travel proposals?

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<font color="yellow">Depends on the specific threat. I think. Big undeflectable stellar core fragment headed for collision with earth in 500 years...</font><br /><br />Good point, as long as it's near enough that we realize that we need to do something about it, but far enough away that anyone could imagine their offspring might get on a ship, then something would be done. <div class="Discussion_UserSignature"> </div>