A 'Captured' Alien Planet May Be Hiding at the Edge of Our Solar System

Astronomers think they've found 19 alien objects lurking in the solar system

Hidden alien planet revealed by its own gravity

Is there really a planet in our solar system larger than Earth hiding beyond Pluto, or is the media just trolling me? - Quora

Strange Uranus-size alien planet could be trapped in edge of the Solar System

Mysterious 'zombie planet' Halla seems to have survived the explosive death of its star. How?

An Alien Planet May be Hiding in The Oort Cloud

Pluto - Sagan Planet Walk - Sagan Planet Walk

NASA's exoplanet hunter TESS spots warm Jupiter with longest known

NASA Wants to Photograph the Surface of an Exoplanet