Dropping Clues from the Sky

A groundbreaking hypothesis. Alien messengers are among us. They have been on this planet throughout human history. Whoever these messengers are, in a very subtle way they're trying to guide us to venture out into space and find a second home. The clues they have left us seem to indicate that they know much to well that not all of us would trust them. There would be many of us that would speculate about their true intentions. They have left us instructions on how to build a spacecraft by wa...