Something may be hiding in one of the darkest regions of our solar system.

Added: 2026-05-17

[00:00:00]In one of the [music] darkest regions of our solar system, something may be hiding. Not a tiny asteroid, not another icy rock. A planet.

[00:00:08]>> Planet 9.

[00:00:09]>> Planet 9.

[00:00:10]>> A massive frozen world so far from the sun that one orbit could take thousands of years. We have never seen it directly. We do not know exactly [music] where it is. But for years, astronomers have noticed something strange. Some of the most distant objects in the solar system move as if something invisible is pulling on