The solar system
Mercury is so close to the Sun that you can only see it near sunrise or sunset. And mercury is the smallest planet in the whole wide solar system.
The comets
A comet is a small, icy celestial body that orbits around the sun. It is made up of a nucleus (solid, frozen ice, gas and dust.
The asteroids
asteroids are little rocks that orbit the moon and the sun.And the whole solar system.
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