Yes. Planets and moons come in all sizes and colors.
In my opinion, yes. At least all 10 billion trillion or more Earth-like planets in the universe come in all sizes and colors.
Yes. Spaceships come in all shapes, sizes and colors.
Yes. Robots come in all shapes, sizes and colors.
Yes. Alien races come in all shapes, sizes, and colors.
Yes. Sentient species come in all shapes, sizes and colors.
Yes. Non-sentient species come in all shapes, sizes and colors.
Yes. Semi-sentient species come in all shapes, sizes and colors.
Yes, they do. They come in a wide variety of colors and patterns and sizes ranging from children to adults.
God made it that way.
No stars are flaming balls of various gasses and moons are planetismals that come from nearby planets
Yes. All 100 billion galaxies come in all shapes, sizes, and colors.
No. Just like planets, moons come in all sorts of sizes, and a few very small ones aren't even round (they are asteroids captured in orbit around some planet and have an irregular shape, as in Mars's moons Phobos and Deimos).