Did aliens come to meet Lord Buddha? In lord Buddha's daily routine, divided into five parts as follows.


the morning session
the afternoon session
the first watch
the middle watch (10.00 P.M. TO 2.00 A.M.) 
the last watch


So the 4th part is The Middle Watch, from 10.00 PM to 2.00 AM.

In that time Lord Buddha will answer the questions from "Devas", and these Devas come to see Buddha by flying Machine called "Wimanas" (or Vimana).

So my question is, does "Devas" here means Aliens? Did Aliens came to see Lord Buddha, and learn about Buddhism?
Devas are buddhist celestial beings. They don't have to mean aliens. https://en.wikipedia.org/wiki/Deva_(Buddhism)