About once a year, you see an article something like this one on MSNBC. It says that astronomers have discovered some new set of planets, some of which 'might be earthlike' (HUGE assumptions involved there, but okay), and which are "relatively close" distances of 35 light-years away.
I've mentioned before that stuff like this totally proves that aliens ain't visiting Earth. I've made the statement--and I stand by it--that alien visits are so impossible that if one ever shows up, it would have to be taken as definitive proof of a God.
Just in case you're curious...assume that you are on Voyager 1, the fastest spacecraft we've launched. (Note of interest probably only to me: In the past I used Helios as an example, but in retrospect it is only so fast because of the gravitational slingshot effect of the Sun. Voyager is a better example, because it is interstellar and thus more representative of traveling speeds to other stars, where you lose the gravitational slingshot assistance.)
Anyway, Voyager 1 traveled at 32400 km/hr, and this "enticing" Earth is 35 light-years away...or a bit more than 330 trillion kilometers. This means that if you launched a mission toward it today, at Voyager 1 speeds, you would arrive in the year AD 1,168,702.
We consider it amazing that the pyramids are only close to falling apart after 5,000 years...and you are talking about an engineering project to send something a million years away? And just think! When it returns to us, it will only be 2.2 million years from now!! It's right around the corner!
When I read stories like this, all I can think is...why in the world do we waste money funding such ridiculous research? To try and figure out if there is maybe a planet that might be habitable that is a mere 1,000,000 years from here? Good grief. Instead, why don't we try getting our heads out of the clouds and give some of that money to the needy children starving to death on our streets, eh?