April 19, 2024

Artist's concept of the impact of a dwarf planet on Pluto (Image courtesy University of Bern, Illustration: Thibaut Roger)

An article published in the journal “Nature Astronomy” offers an explanation for the formation of the large and deep basin known as Sputnik Planitia on Pluto with its characteristic heart shape. A team of scientists coordinated by the Swiss University of Bern created computer simulations that indicate that the depression that is some kilometers deep could have been generated by an impact with an object with a diameter of around 700 kilometers that occurred at an oblique angle and was relatively slow. The results of these simulations also suggest that Pluto likely doesn’t have a subsurface ocean of liquid water, unlike other studies.