Planets are formed when the surface phase changes to a solid material. All planets were once stars.
No one knows for sure yet. Some day Mercury can become a drawf planet because of how small it is. If Mercury does become a drawf planet Mars is probably next.
Since Pluto is no longer considered a planet, mercury has become the smallest planet.
Mercury is a planet.
Mercury is not a dwarf planet. It is a planet.
Mercury is itself a planet - it did not come from a planet!
how does the planet mercury's spins?
Mercury
Mercury is the planet: there is no raw (or ripe) planet associated with it!
Mercury is a very hot planet. Mercury is the closest planet to the sun.
Yes, Mercury is a terrestrial planet.
Mercury is the 1st planet from the sun.
The planet Mercury is a solid ..........................