Simulated structure of planet candidate 9. Credit: © Esther Linder, Christoph Mordasini, Universität Bern
Astrophysicists at the Uni of Bern have modelled the evolution of the putative planet in the outer solar system. They estimate the object has a present-day radius equal to 3.7 Earth radii and a temperature of -226C/ 47K. 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 questions that Prof Christoph Mordasini, Uni of Bern, and Esther Linder, PhD student wanted to answer when they heard about the possible additional planet in the solar system suggested by Konstantin Batygin and Mike Brown of the California Institute of Technology in Pasadena.
The Swiss scientists are experts in modelling the evolution of p...
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