Where Are The Aliens Coming From

I have heard several times not only on the Coast to Coast Show but other sources that the UFO/alien say they are either from the planet Mars or Venus yet our Science on earth states these two planets can not sustain life. Some people think that aliens are coming from another dimension. I want to share some thoughts with you those who read my postings.

"I'm from Mars," said the aliens to the human! I'm not saying for sure but here might be an answer to this:

If the aliens have the abilities to time travel and yes eons of years ago their planet Mars, Venus did have life then this statement would be true they once lived on either Mars or Venus. I have read that when they say "I live on Mars and Venus" again they might be telling the truth. How can this be? Simple like earth which by the way in