Russian
внеземная жизнь Portuguese
extraterrestes Spanish
inteligencia extraterrestre Catalan
alienígena 
1
New information has become available indicating the aliens have come in peace.
2
Although, come to think of it, most aliens probably did not know.
3
In other words, evidence that aliens have sent search probes to Earth.
4
Its secrecy still fuels speculation that it's where the government studies aliens.
5
It's her first real lead on how to talk to the aliens.
1
Sadly for believers in extraterrestrial life, there is a more mundane explanation.
2
They believe it is an important step in the search for extraterrestrial life.
3
Queloz also fielded inevitable questions about the possibility of extraterrestrial life.
4
If mankind finds intelligent extraterrestrial life, what will happen to the world's religions?
5
This weird life would the best possible analog for extraterrestrial life.
1
You're an alien life-form, you see. It was difficult to remain calm.
2
By acquiring those new genes, this alien life-form had become part human.
3
He said, We discovered the first alien life in our solar system.
4
Astronomers' hopes of finding alien life on worlds near Earth were crushed.
5
Many think Europa's salty seas could harbor some sort of alien life.
1
They were followed by the Sak's Fifth Avenue display; nine small floats, each depicting life on another planet.
2
That is, life on another planet must be thought of as being no different from what experience teaches you.
3
If you found intelligent life on another planet, would you tell the public the truth or keep it a secret?
4
But what are the chances of intelligent life on another planet and could they travel through space to visit earth?