Alien means belonging to a different country, race, or group, usually one
you do not like or are frightened of. (FORMAL)
He said they were opposed to the presence of alien forces in the region. = foreign
You use alien to describe something that seems strange and perhaps frightening,
because it is not part of your normal experience.
His work offers an insight into an alien culture. = unfamiliar
If something is alien to you or to your normal feelings or behaviour,
it is not the way you would normally feel or behave. (FORMAL)
Such an attitude is alien to most businessmen. = foreign, unfamiliar
An alien is someone who is not a legal citizen of the country in which they live. (FORMAL)
In science fiction, an alien is a creature-создание from outer space.
Space is the area beyond the Earth's atmosphere, where the stars and planets are.
The six astronauts on board will spend ten days in space.
...launching satellites into space. ...outer space.