3 Reasons Why Aliens Wouldn’t Visit Earth, Even If They Could

Scientific speculation on why we haven’t been visited aliens.

An alien robot explores the Earth from orbit. Source: ConceptCafe, via Storyblocks.

As astronomers discover more about our Universe, the more we realize that Earth, and all those who live on it, are just a small piece of a grander cosmic expanse. Astronomers estimate that in our alone Galaxy, there are about 300 million potentially habitable…