Building the HR 8799 Solar System with Asteroids and Comets

Modeling the HR 8799 star system reveals ice and rocky materials may travel between supermassive planets

The HR 8799 solar system is much like our own, leading a group of astronomers to study asteroids and comets in this distant star system. Much like our own family of planets, this family of planets contains four giant worlds and (possibly) a handful of smaller, rocky planets closer to their star.

The HR8799 planetary system, 129 light years from Earth, is also home to a pair of asteroid belts on either…

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