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Can We Predict if a System Will Have Giant Planets?

It's assumed that planetary systems will be roughly similar to the Solar System, with smaller terrestrial planets close to the star and larger gas and ice giants farther out. But these planets take so long to orbit their stars that it'll take a long time for astronomers to find them with the current techniques. A new study suggests that the more easily discovered inner planets should also indicate whether the system has outer planets.

http://arxiv.org/abs/2306.08846