Science & Technology | Science

Planet Nine: The answer to this cosmic mystery may come sooner than you think

Is it a planet, a black hole, or a group of planets? One astronomer has an ambitious idea to find out.

Science & Technology | Cool Stuff

Mysterious Gravitational Tug on Orbiter May Help Find Planet Nine - Scientific American

Astronomers are homing in on the whereabouts of a hidden giant planet in our solar system, and could discover the unseen beast in roughly a year