Ice gave Pluto a heavy heart
Buildup of frozen deposits could have carved dwarf planet’s iconic landscape
![Sputnik Planitia](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/11/112916_CR_pluto_main.jpg?fit=860%2C460&ssl=1)
FEELING DOWN A basin on Pluto named Sputnik Planitia (at right in this image from New Horizons) might be a depression formed by the weight of a massive ice cap, a new study suggests.
NASA, JHUAPL, SWRI