This tendency has roots in the “blue dot” theory—a concept explored by Mark Manson, author of The Subtle Art of Not Giving a F*ck. Essentially, it suggests that when we’re primed to see ...

The "Pale Blue Dot" picture of Planet Earth was acquired by the Voyager 1 probe exactly 30 years ago on Friday - from a distance of about 6 billion km (4 billion miles) miles. To mark the ...