Upsilon Andromedae A System

Upsilon Andromedae A System

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Fast Facts
News release ID: STScI-2010-17
Release Date: May 24, 2010
Image Use: Copyright
About this image

This is an artist's illustration of the Upsilon Andromedae A planetary system, where three Jupiter-type planets orbit the yellow-white star Upsilon Andromedae A. Astronomers have recently discovered that not all planets orbit this star in the same plane, as the major planets in our solar system orbit the Sun. The orbits of two of the planets are inclined by 30 degrees with respect to each other. Such a strange orientation has never before been seen in any other planetary system. This surprising finding will impact theories of how planetary systems form and evolve, say researchers. It suggests that some violent events can happen to disrupt planets' orbits after a planetary system forms. The discovery was made by joint observations with the Hubble Space Telescope, the Hobby-Eberly Telescope, and other ground-based telescopes.

Exoplanets, Hubble Telescope, Infographics, Planets, Stars


Illustration Credit: NASA, ESA, and A. Feild (STScI);
Science Credit: NASA, ESA, and B. McArthur (The University of Texas at Austin, McDonald Observatory)