not sure what you mean by "most aliens" who are the others? if there are any at allAs I said some pages before, the idea that we as humans will travel to other systems is spoiled. It won't happen. It's the same for most aliens as far as we know. That doesn't mean, that you can't send probes and drones to do the job. "Scouts" can be very small in scale and can be advanced by laser and solar sails easily. This way they could reach e.g. Proxima Centaury in about 20 to 50 years dependent on the weight of the probe. Those are able toi make fotos and send them back to earth. We can do that in the next few decades and probably will.
Bigger drones like those watched by the US Navy could've been sent literally millions of years ago. A civilization that is not directly threatend by astronomical events and have tamed their destructive culture aspects just could plan in completely other scales of time.
If you send probes like that to hundreds other systems the signals maybe need thousands of years or more to return but if that point is reached, there will be a sustained stream of informations coming in. It's as I said a matter of scale of thinking, nothing more. But again, the idea that we a living persons will travel the universe is somehow spoiled. We currently send probes ourselves through our own system instead of piloting them with human beings. For a reason.
There's a difference though between technology and what is possible within the physical universe that we live in. If we send people to far flung places at great speed then it's a fact that we on Earth will never know if they got there and they'll never be able to come back to anything worthwhile.
As you get closer to the speed of light time essentially stops and a day in your spaceship becomes hundreds of years for everyone else. Scientists have already proven this by showing that the clocks on satellites orbiting Earth tick slightly slower than those on Earth due to time dilation.
Aliens are going to have these exact same problems and they'll need to live for thousands of years travelling and able to produce food, oxygen etc. The technology will also need to overcome the simple fact that you cannot accelerate to great speeds without force, the kind of continuous accelerating force that would need energy equivalent to strapping a sun on your spaceship.
Personally I think life definitely exists elsewhere but it's going to be quite literally impossible and even pointless for us to try find out where else it is. We still don't even know if life ever existed on Mars and Mars is a footstep in a walk around the world in terms of space travel.
What about if worm holes or vortex's come into play?The physical laws governing the universe are the same whether you are stood on planet Earth or tucking in to Pan Galactic Galactic Gargle Blaster at the Restaurant at the End of the Universe.
Unless an intelligent life form from another planet has developed the ability to live for a very long time in order to be able to travel for millions of light years to earth, and sustain themselves in the process there is practically zero chance of us ever meeting someone or something from another planet.
As far as I understand it the forces exerted would be prohibitive to any living organism passing through them.What about if worm holes or vortex's come into play?