Impossible to predict. It would depend on what sort of aliens these were, and why they came here. Science Fiction writers have imagined hundreds of possible results from The Twilight Zone's classic horror episode "To Serve Man" (spoiler: "It's a COOKBOOK!") to Isaac Asimov's more humorous story "Buy Jupiter", to the more martial "invasion from space" scenarios like the movie "Independence Day" and the Niven & Pournelle classic SF novel "Footfall".
One thing is certain; it would answer the questions "Are we alone in the universe" and "Is star travel possible" in a very graphic way.
If Mars had living beings they would not be aliens on Mars but, if they came to earth they would be aliens on earth. Alien actually means not from here.
No one knows.
Is there any reason to think that aliens are all cereal killers?
the earth would blast
The moon might crash into the earth
It would get to hot. We would die.
Aliens are more advanced then us if they came to earth but if they found out to late that the only way to kill them is to shoot them in Head then it is a fair fight.
I dont think it is likely to happen.
Depends if they can cloak their ships or if they can use stealth or not. Etc etc.
If you find something that looks alien, it is more than likely going to be fake. Aliens have never landed on earth and people on started seeing UFOs and aliens in the 1950s when Sci-fi came out introuducing the possibility of aliens however all recorded alien finds have been proved as fake.
Both animals came to earth from aliens.
We won't know until we can all see them.
The earth would be attracted by the sun, and as it came closer the sun, the earth would melt. The earth would probably collide with the sun before or after it would melt.
I would hope we would try to greet them as friends until proven otherwise. The fact is that if aliens have the technology to come to earth, I don't think we would have much hope of winning a war with them.
If the earth got pulled in closer to the sun, or if the sun expands significantly, then the earth will get much warmer. That said, nothing like that is going to happen for a couple billion years yet.
The teen titans formed when Starfire came to earth. She was a prisoner and when she came to earth she destroyed some things and she mad sure no one got in her way. Robin, Beast Boy, Cyborg, and Raven fought her and when they stopped Starfire kissed Robin so she could speak English and she flew off. When they found her again she threatened them and then one of the aliens said that if someone found Starfire then they would get an award. Then when the aliens came to earth Robin said that he, Raven, Beast Boy, and Cyborg would protect her, so they all fought all the aliens and when the aliens got defeated and left they became the teen titans.
My Earth, as well as my Sun, would be completely destroyed if a black hole came through our Solar System. I'm not certain what would happen to YOUR Earth.
Dolphins are not satanic, they are aliens that came to earth to warn us of the horrible future
the guitar was designed and first made by aliens that came down to earth
Well before it hit the earth, if the sun came toward the earth, it would heat up the earth and everything on it. Then as it got closer and closer eventually it would just burn the Earth and everything on it.
it will boil the ocean and melt the trees and grass
there isn't any proof of any alien spacecraft even exists but even if aliens exist they would have some sort of spacecraft to go to earth in because there isn't any other known way of getting living things from planet to planet.
The aliens from "Aliens in the Attic' came from a planet called "Zirkon".
because aliens attacked earth but they caught the black plague and died