It's a condition that happens when you have a pseudo-interested friend in your chat group on a social media platform. Either be nice to him/her so they stop, or chuck the creepy mofo out.
An astronaut of Russia(or the former Soviet Union) is called a "cosmonaut". The word was derived from "kosmos"(universe) and "nautes"(sailor/navigator).
American space travelers are astronauts; Russian space travelers are cosmonauts; Chinese space travelers are taikonauts.