Planet Nine

New Evidence on the Formation of the Solar System

New evidence on the formation of the solar system

International research involving a Monash University scientist is using new computer models and evidence from meteorites to show that a low-mass supernova triggered the...
Simulated structure of planet 9

How big and how bright is Planet 9 if it really exists?

How big and how bright is Planet 9 if it really exists? What is its temperature and which telescope could find it? These were the...
Planet Nine: A world that shouldn't exist

Planet Nine: A world that shouldn’t exist

Earlier this year scientists presented evidence for Planet Nine, a Neptune-mass planet in an elliptical orbit 10 times farther from our Sun than Pluto. Since...
planet nine

More evidence for Planet Nine on solar system’s fringes

As the search for a hypothetical, unseen planet far beyond Neptune's orbit continues, research by a University of Arizona team provides additional support for...
Planet Nine

Nine things to know about Planet Nine

In January, Konstantin Batygin, assistant professor of plantary science, and Mike Brown, the Richard and Barbara Rosenberg Professor of Planetary Astronomy, announced that they...
Planet Nine orbit

Curious tilt of the sun traced to undiscovered Planet Nine

Planet Nine—the undiscovered planet at the edge of the solar system that was predicted by the work of Caltech's Konstantin Batygin and Mike Brown...
An artist’s conception of Planet X or Planet 9.

Hunt for ninth planet reveals new extremely distant solar system objects

In the race to discover a proposed ninth planet in our Solar System, Carnegie’s Scott Sheppard and Chadwick Trujillo of Northern Arizona University have...
Theft behind Planet 9 in our solar system

How the new Planet 9 was stolen by our sun

Through a computer-simulated study, astronomers at Lund University in Sweden show that it is highly likely that the so-called Planet 9 is an exoplanet. This...
solar system

Planet Nine could spell doom for solar system

The solar system could be thrown into disaster when the sun dies if the mysterious ‘Planet Nine’ exists, according to research from the University...
Planet Nine

Evidence of a real ninth planet discovered by Caltech researchers

Caltech researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers...