News

Extreme trans-Neptunian objects lead the way to Planet Nine

13 June 2016 Astronomy Now

In the race towards the discovery of Planet Nine, scientists from around the world strive to calculate its orbit using the tracks left by the small bodies that move well beyond Neptune. Now, astronomers from Spain and Cambridge University have confirmed that the orbits of the six extreme trans-Neptunian objects that served as a reference to announce the existence of Planet Nine are not as stable as originally thought.

News

Researchers home in on likely whereabouts of Planet Nine

27 February 2016 Astronomy Now

Using observations from NASA’s Cassini spacecraft, a team of French astronomers from the Institut de mécanique céleste et de calcul des éphémérides, and the laboratory GeoAzur have been able to specify the possible positions of a ninth planet in the Solar System.