A light-year is 5.88 TRILLION miles...
The closest star is something like a little over 4 light years is i remember correctly.
Maybe they can give us their Warp technology.
Solve both world hunger and disease.
Especially important give us the cure for baldness..
And how they deal with the dilation of time. The distances are just too large.
cure for baldness?...........Heck they worship baldness!...........
And if memory serves me right there is some orbital body around that star but it's pretty much an uninhabitable planet.
And even if some alien civilization were to have the technology , first of all to find us and then get here, if Einstein’s Theory Of Relativity is correct everything these aliens left on their home world is now long gone.