None whatsoever.
There has not been any evidence of alien life so I do not know what you are talking about.
No. To date there is no proven direct evidence of extraterrestrial life.
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.
There is no scientific evidence to support the idea that there was ever a red man or alien on Mars. The surface conditions on Mars make it unlikely for any form of complex life to exist. Any claims of life on Mars are speculative and not substantiated by scientific data.
So far, there is no firm evidence. But that doesn't mean there is no alien life; the Universe is just so enormous that not much has been explored so far.
There is no scientific evidence to suggest that aliens live on Mars or any other planet. The search for extraterrestrial life is ongoing, but as of now, we have not found any conclusive proof of alien existence.
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.
There is no evidence of any kind to support the idea.
No, but that does not mean there aren't any. Scientists, Astronomers and Cosmonauts are trying to find evidence of alien life. They have sent signals to Space to see if there are any. For example on Uranus, Neptune Or one of Jupiter's Galilean Moons (The largest) There have been ocean or sea like things and there just might be life there.
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.
Now, let's get serious. There are no aliens known to exist, just a bunch of anecdotes, and no matter how high you stack anecdotes, they never become evidence. We hope there is other life out there, and we consider it likely. But someone has to be the first form of intelligent life in the universe, and there is no evidence that it isn't us.
half-life