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Pluto was recategorized from a planet to a dwarf planet in 2006. (Shutterstock)

Juni 5, 2022

Curious Kids: Why does it matter if Pluto is a planet or a dwarf planet?

Samantha Lawler, University of Regina

A curious kid asks: Why does it matter if Pluto is a planet or a dwarf planet?

Pluto, the largest of the dwarf planets. This image was taken by NASA’s New Horizons spacecraft. NASA/JHUAPL/SwRI

April 4, 2022

What is a dwarf planet?

Vahe Peroomian, USC Dornsife College of Letters, Arts and Sciences

The dwarf planets in our Solar System are cold, dark, far away and full of surprises.

An artist’s concept of a hypothetical planet with a distant sun. (Shutterstock)

Mei 25, 2020

Why astronomers now doubt there is an undiscovered 9th planet in our solar system

Samantha Lawler, University of Regina

In the search for the hypothetical Planet Nine, scientists may have uncovered another explanation for the patterns in the orbits of Kuiper Belt objects.

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Samantha Lawler
Associate professor, Astronomy, University of Regina
Vahe Peroomian
Professor of Physics and Astronomy, USC Dornsife College of Letters, Arts and Sciences

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