Do you think there are aliens?

[Tellos Athenaios]

Right now Humans can't travel to the moon, actually. There are numerous projects under way to restore that “capability” but right now we can't do much more than take the Sojuz shuttle between ISS and Earth.

While the prospects of “some kind of alien” are looking good (assuming that we ignore French and Texan ones who merely behave in an alien fashion) those of “intergalactic travel” or “alien encounters” are much less good. So far our best bet of weird quantum physics dimensions travel is that you essentially do unto a proton what would melt you out of existence were such a thing done unto your yourself. (Nevermind the outrageous amounts of energy that are required to get you colliding with something roughly your own size at roughly the same amount of eV per relevant particle in your body.)

[Viking]

Right now Humans can't travel to the moon, actually. There are numerous projects under way to restore that “capability” but right now we can't do much more than take the Sojuz shuttle between ISS and Earth.

Oh, c'mon; you know what I meant. All we need to do is to initiate a project, and we can. We have/know the technology required. The same thing could have happened to alien civilizations - they visited a few alien solar system, and thought they were awesome since they could; but eventually they got bored and didn't like the costs that came with it.

While the prospects of “some kind of alien” are looking good (assuming that we ignore French and Texan ones who merely behave in an alien fashion) those of “intergalactic travel” or “alien encounters” are much less good. So far our best bet of weird quantum physics dimensions travel is that you essentially do unto a proton what would melt you out of existence were such a thing done unto your yourself. (Nevermind the outrageous amounts of energy that are required to get you colliding with something roughly your own size at roughly the same amount of eV per relevant particle in your body.)

There are also the ideas of hibernation, multi-generation space ships etc. We don't have to rely on too exotic theories for interstellar space travel to be possible.

[Tellos Athenaios]

Oh, c'mon; you know what I meant. All we need to do is to initiate a project, and we can. We have/know the technology required. The same thing could have happened to alien civilizations - they visited a few alien solar system, and thought they were awesome since they could; but eventually they got bored and didn't like the costs that came with it.

Yes. Which says exactly what about space travel by aliens? That it may not happen even if it is possible?

There are also the ideas of hibernation, multi-generation space ships etc. We don't have to rely on too exotic theories for interstellar space travel to be possible.

Which is no less exotic, I'm sure. Seriously: hibernation is not an option if you want to survive your travels: one needs to eat in order to hibernate; and in order to eat one needs to wake up. So at best you merely prolong the eat-sleep cycle, which incidentally makes hibernation only practical for small-ish aliens because you cannot tend any crops or similar whilst hibernating.

EDIT: There are various other interesting Health & Safety issues regarding to hibernation & space travel, too. Chief among which is that you no longer have the environmental sanity-checks of seasons, gravity, etc. etc. to trigger interrupts in your hibernation, and keep your organs healthy.

[A Nerd]

Not to mention even if you did travel to an alien world in hibernation at the speed of light, by the time you returned to earth or vice versa thousands of years will have passed. The founders of the project will be long dead and the space traveler will be out of place and lose his/her understanding of the civilization he/she left.

[Centurion1]

it is imo conceited to believe that aliens are watching us. why us of all people? its ridiculous.

and as to faster than light travel it is impossible but there are certain things and laws of physics that could be exploited as gaelic said, in quantum physics. think of the universe as a piece of paer. now using a specific type of machine or engine (dont ask me how but theoretically it is possible) you crumple up that piece of paper and do two things as well, 1. on a small scale so as not to disrupt the universe and 2. not make it permanent. then if you can manage that you need to develop some way to navigate the CReases in the crumpled up piece of paper. Otherwise you could get "lost". IF you can do that then go write your name down as the greatest mind in the history of mankind.

all speculation of course.

[miotas]

it is imo conceited to believe that aliens are watching us. why us of all people? its ridiculous.

Well, there are always human scientists who research really obscure things that seem to have no possible use, maybe everyone back on planet zog is rolling their eyes at the weird scientist off at the other end of the galaxy researching these strange semi-intelligent creatures called humans.

EDIT
Or maybe we are being conceited, maybe they are coming to study our wildlife, or geographical formations, and we think they're here to see us.