NASA: Ancient Rock Art May Have Been Carved by Aliens

Is NASA endorsing the ancient aliens theory? A new NASA book suggests that ancient rock art could have been created by extraterrestrials.

Each month a new planet is discovered that bears similarities to our own - and it is becoming increasingly apparent Earth is not unique.

So it stands to reason that of the billions of Earth-like planets in our galaxy alone, there might be another that hosts life.

It’s a thought that is gaining more credence all the time, and now Nasa has released a fascinating book detailing how, or if, we might communicate with some of these worlds. Read more