Do you think that one day humans will travel to another galaxy ?
I assume you did mean galaxy and not solar system and planet in our Milky Way. Reaching another planet might happen if we managed to do the light speed or maybe worm hole things. But to another galaxy, crossing the vastness of intergalactic space? Wow, we would have to evolve into some amazing kind of species to do that. The only thing I could imagine is if we found the universe worked in some different way, with intergalactic highways or some such, but that's the realm of pure science fiction.
I don't think so. I don't think we'll exist as a species even in the time it takes for a probe to reach the nearest star system. But I wonder if some species of artificial being, originating from human manufacture far back in its evolution, may spread itself throughout our own galaxy and beyond.
If civilization survives and technology continues to advance, it's entirely possible. If one can build a spaceship capable of constant 1g acceleration, and that's just an engineering problem, humans could explore the universe in a human lifetime. The catch is ... a lifetime for people on the ship. Relativity means that billions of years will pass outside the ship, so if the travelers returned to Earth billions of years will have passed. One way trip basically.
According to secret government whistle-blowers, and the document "Unacknowledged" - seen on Netflix and YouTube - containing videos of Hillary, Obama, NSA officials, astronauts, and scientists admitting that the US government has been suppressing information on US interactions and use of alien technology since WW ll, after it was captured from the Germans, who back engineered it from two crashed UFOs.
The US government keeps it classified and aggressively suppresses all UFO reports-ridiculing the people who report them, so they won't have to share the advanced alien technology. A few years ago, a European hacker was condemned by the NSA for hacking into their database and finding payments to alien US military officers and info on putting down slave rebellions on Mars base factories.
'UFO Hacker' Tells What He Found - NSA furious [wired.com] via @WIRED
Yes but not at the technology level we are at at this time. we still have to use brute force to produce energy to run our world. solar is a possible answer but we lose too much transporting the energy. wind costs more to even produce a tower than it would ever regenerate by itself. the next big thing is being able to manage the small forces that hold atoms together. all we can do now is smash them to release energy. not efficient or clean.