Avoid meteorites and their crash sites
If aliens were to plan a more subtle invasion, they might first enter our planet via seemingly innocuous meteorites. Meteorites can turn out to be spaceships with disastrous results. In John Carpenter’s “The Thing,” an alien life form wreaks havoc in the Antarctic after researchers reveal a buried space ship.
In the real world, NASA continues to look for evidence of alien life. At the NASA-sponsored Space Science Institute’s Alien Earths exhibit, children are taught that the first alien life we discover most likely won’t be green and have enormous eyes. Rather, scientists will be looking for microbes and other life forms in the atmospheres of distant planets.