"It all works like intricate clock gears. Throw more gears into the mix and it all breaks." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. What ...

Our solar system is suspended in a delicate balance of massive forces. Introduce a new terrestrial planet into that equation between Mars and Jupiter, and it could jettison the Earth out of the solar ...

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s hiding in plain ...