light speed impossible
too far away to closest star
travelling thousands of years you would need oxygen, food, water, reproduction
even if they somehow got to a decent speed (parker space probe) it would still take 6500 years travelling at 430,000 miles per hour to reach alpha centuri, who is to say any life is there
6500 years of oxygen, food, water, (able to reproduce or die from old age)
somehow know where you are travelling, somehow to stop/slow down your spaceship
deal with tiny rocks/asteroids, gas clouds
yeah nah