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