"NASA's New Horizons team researches Pluto. Pluto is a dwarf planet. The team has a spacecraft that traveled to Pluto. It took pictures of Pluto and gathered other information. The spacecraft is currently past Pluto. The team published a study on February 4.
The study says that Pluto's weather cycle works like a heartbeat.
Pluto has a giant basin. The basin is covered in nitrogen ice. Nitrogen is a chemical element. From space, the basin has the shape of a heart. The basin is called Sputnik Planitia. It is nicknamed the "heart."
Each day on Pluto, sunlight hits the Sputnik Planitia basin, which is the left side of the "heart." This turns the nitrogen ice into gas. At night, it gets really cold on Pluto. This causes the gas nitrogen to turn back into ice. This cycle repeats every day on Pluto. One day on Pluto is equal to about six and a half days on Earth."
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