[FONT=Geneva] What do they want to find up there?
Why if we go to other planets is it considered peaceful exploration, but if other life comes here its considered Evil Alien invasion with the intent to destroy or control earth. Is it possible that they just are visiting peacefully or that we are trying to kill them and take over their planet?

As long as we keep G-Dub's dirty little mits off of Mars, everything will be okay.

it doesn't appear that other planets have life which are similar to us. If aliens visited us then it is considered an invasion because they are equal to us. I would considered it as the Russia invading Canada or Canada invading the USA. Mexico invading the USA.

PiGod...you have just said it! That's exactly it.

That's some kind of logic...

we can go ( there) to Mars, but all hell breaks loose if they come here. They are considered hostile if they come flying onto our planet, but we can just trapse all over the universe, if we want to.That's okay!