It is possible, but no one knows of any such planet. We don't know if there are aliens. Someone has to be the first form of intelligence in the universe, and there is no reason to think it isn't us.
No. There is no evidence of life on Mars.
There are no confirmed sightings of extraterrestrials, yet. When we first establish contact with an extraterrestrial species it will most likely be through radio waves. The reason is that it is vastly cheaper and faster to broadcast radio than it is to send a space craft directly. "Grays" are most likely figments of over active imaginations--hypnotic suggestions.
To see the way we live, or destroy us.
.How do you know that earth isn't the other planet?
Mars is known as the Red Planet. When aliens speak of Earth they call it the Blue Planet.
aliens live in space
Another country or planet
Aliens From Another Planet
No. Rigel is a star. Any aliens would have to live on a planet.
aliens
Nordics live in another realm same as the earth plane only a different time and place.
Not Really there from another planet there aliens to us.
You shall crush aliens!
the only way for aliens to live on Neptune is they have to be able to survive on a planet like neptune. it wouldn't be a very good choice unless the could live on a freezing and mostly gas planet.
No. There is no evidence of life on Mars.
Earth is invaded by aliens from another planet.
Aliens, as in illegal aliens from Mexico or Guatamala? This morning. SPACE aliens who have come from another planet? Never.