ផលូតូ
A dwarf planet in the Kuiper belt, with a heart-shaped nitrogen-ice plain and five moons.
NASA, ESA, CSA, STScI; J. DePasquale, A. Koekemoer, A. Pagan (STScI) (CC BY 4.0)
The planet that became a dwarf planet, and turned out to have mountains of ice and a heart-shaped plain.
Pluto was discovered by Clyde Tombaugh in 1930 and was considered the ninth planet until the IAU defined the term planet in 2006. It is a dwarf planet in the Kuiper belt.
NASA’s New Horizons flew past in 2015 and revealed mountains of water ice and Sputnik Planitia, a vast plain of nitrogen ice. Its largest moon, Charon, is so big relative to Pluto that the two orbit a point in space between them.
ប្រភពទិន្នន័យ
Tools and lessons use simplified models for learning only. They must not be used for navigation, mission planning or any operational decision. Certificates are free and non-accredited. អានការលុបចោលមាតិកាអប់រំ