History of UFOs - People have reported seeing UFOs but no one has proven there really are UFOs or aliens. The government says they don't exist, but they might not want people to be scared.

Space Travel - Everything in space is really, really far away! Even if we find a planet like Earth, we can't travel fast enough to get there. Scientists say we will never be able to go the speed of light. For aliens to visit Earth, they would need to have a lot better technology than us.

What Would Aliens Look Like? - They wouldn't look too much like humans, but they might have a head with sensory organs, walk upright, and have some sort of hands

Why Would Aliens Visit Earth? - They might just be exploring, but they could also want our land because they had ruined theirs. They would be more advanced than us, so they would be able to conquer us.

Alien Invaders from Earth - Even when explorers were peaceful, or the animal was brought to a place on purpose, most of the time it was very bad for the natives. Disease was one of the biggest problems.

• We don't think aliens will visit Earth soon. It is too far away to other planets, and it's too hard to travel fast enough.
• If aliens did come to Earth someday, it would be very bad for us. They probably would want our planet, and they would be powerful enough to beat us.
• Even if they were peaceful, they might bring a disease that we wouldn't have a cure for.

• Relax! No one is coming here anytime soon.
• If they do visit, stay far away from them until you know they are peaceful, and that you won't get sick.
• Take pictures!