Why are planets spherical?
Why are all planets spheres?
What's the point of existence of other planets? Do spheres actually have 8 sides? Why don't planets have phases like the moon? What is a planet? How many planets are there? How many spherical moons, dwarf planets and terrestrial planets are there in the Solar System? How have the planets been named? What are natural satellites of a planet? What are the dwarf planets in the solar system? Why are most planet orbits in our solar system on relatively the same 2D plane? Are the orbits of each planets coplanar? Why do extraterrestrial bodies always appear as a spherical shape? Why not square or cylindrical? How many planets are there in the solar system? What is the difference between inner and outer planets? What is our planet? How come the other planets have mythological names and ours is just called Earth? Why is Pluto no longer considered a planet? How is the gravity of other planets measured? What is Planet X? Is it sad that other planets in our solar system look so lifeless? How many planets are there in the universe? How many planets are currently in our solar system? How many planets are there in our universe? How many planets do we have in our solar system? How is each planet different from each other? What is a sphere? How do sphere helps our daily lives and what are some examples? Why isn't Pluto a planet? Given the trillions of objects orbiting the sun in the Asteroid, Kuiper-Edgeworth and Oort Belts, why haven't more coalesced to form planets? How many planets are there in the solar system including the dwarf planet? Is the sun considered a planet? Why or why not? Are there satellites orb?