According to this perfectly fine group;
http://ri.essortment.com/newplanets_rsma.htm
"With our current technology, a trip to the nearest star system would take over 40,000 years"
and of so many others claiming similar proposals that are not offering much better off.
Of which this obviously isn't even pertaining to the Sirius star system at 8.7 light years distant and counting, as that's a good 100,000 years worth, while averaging at ten fold better off velocity than we can sustain a probe, much less of any manned expedition as of today, and that's without such efforts first taking that decade worth of acceleration loops past our sun. And to think, just what in the hell have we for shielding (physical as well as radiation worthy) that sort of 2,000+ generation (one-way) biological expedition?
Instead of continually blowing billions upon billions, and of wasting decades worth of talents and resources getting such technology and efforts off the ground, that's why I've focused upon photon communications, and of getting ourselves up to the efficient standard of utilizing such affordable, environmentally clean and obviously speedy packet exchanges, rather than risking all there is upon any sort of physical accomplishments, outside of what's situated right nextdoor (moon/Venus, but NOT the likes of Mars or further).
Although, going for what our moon has to offer, and of what's situated upon Venus is just fine and dandy, as in affordable, doable and certainly worthy of what the lower 99.9% of humanity (apparent scum of the Earth) could use to survive upon, in spite of the other 0.1% of absolute incest cloned borgs that obviously couldn't give a flying puck about any other humanity, outside of their own sorry butts.
The moon/lunar Space Elevator topic (several pages worth of viable topics) offers something for everyone that's related to improving our chances/odds of our ever interplanetary-communicating with ET, and/or of getting ourselves safely to/from the likes of Mars, though preferably Venus. As for accommodating that sort of honest quest, as such we'll soon be in need of a darn good Lunar Space Elevator, or the GMDE (Guth Moon Dirt Express) as for accommodating the ultimate space depot, and/or nearby nullification gateway in the sky:
http://guthvenus.tripod.com/lunar-space-elevator.htm
BTW; there's at least a hundred perfectly good and honset topics related to this LSE-CM/ISS, of which I'd like others to tackle as many as they see fit. Anyone anti-moon, or even anti-Venus will be exterminated on the spot, as in the most profecient manor possible. So, don't expect my persomal favor returning to soften if you intend to block or pretend to being something other than whom you are, that is if you know what's good for yourself.
Regards, Brad Guth / GASA~IEIS
http://guthvenus.tripod.com/update-242.htm