does it have a solid surface?
UNANSWERABLE
what is pluto? A dwarf planet in the Kuiper belt. who discovered it? Clyde Tombaugh when? 1930 what is its origin? One early hypothesis was that Pluto was an escaped moon of Neptune. what is its mass? 17.7% that of the Moon. what is its size? Its surface area is , or roughly the same surface area as Russia. what kind of atmosphere does it have? It has a tenuous atmosphere consisting of nitrogen (N), methane (CH), and carbon monoxide (CO). does it have a moon? UNANSWERABLE does it have a relation with any other planet? Yes, with Neptune. what kind? Pluto is protected by its 2:3 orbital resonance with Neptune.
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Pluto [SEP] Relationship with Neptune
Despite Pluto's orbit appearing to cross that of Neptune when viewed from directly above, the two objects' orbits are aligned so that they can never collide or even approach closely. The two orbits do not intersect. When Pluto is closest to the Sun, and hence closest to Neptune's orbit as viewed from above, it is also the farthest above Neptune's path. Pluto's orbit passes about 8 AU above that of Neptune, preventing a collision. This alone is not enough to protect Pluto; perturbations from the planets (especially Neptune) could alter Pluto's orbit (such as its orbital precession) over millions of years so that a collision could be possible.