no, exept for us humans.
Currently there are no known alien life forms. If alien life exists it probably comes in many varieties. However, if life on Earth is any indicator, it is unlikely that aliens would have multiple heads. In all animals on Earth, multiple heads only occur with birth defects.
Life outside Earth would be defined as extraterrestrial life, or what might be referred to as alien. It would include any organism, plant or animal, that is "alive."
There have been no signs of an alien life form found on planet earth yet.
There is no evidence to say weather or not we will find alien life in 2025 or at any time in the future, let alone set a date. It is still unknown if life exists beyond Earth, or how common it is if it does exist.
Yeah,probibly, because aliens are basicly people and and life form or even a tree could possibley be counted as an alien in my world. Anything not on earth would be an alien. E.T. MEANS OUT OF THIS WORLD AND ANYTHING OUT OF THIS WORLD IS AN ALIEN! So possibley!
Alien, is the term used to refer to life which does not originate from Earth. Though no hard evidence has ever been found to confirm presence of any life form outside earth.
On Mars, the most advanced life form (if there is any) would be bacteria, whilst on earth mammals are the most advanced.
All planets other than Earth could be considered alien. Earth is the only planet known to harbor life.
Since we don't know any alien language nor any aliens there is no answer to this question.
No alien life, including microbes, has been found so far, so it is really hard to tell what would happen. It is conceivable that alien life may wipe out all life on Earth, or all higher-level life; or vice versa, that Earth life may wipe out all life on some other planet. It is also conceivable that the biochemical processes are so different that none can eat the other.
The meaning of the term "alien world" is somewhat ambiguous. No evidence of life on any planet in the solar system except earth, or on any planet around any other star, has yet been found.
None whatsoever.