It is the nearest to the sun.
Mercury
mercury is very very heater than other planets
the planet which completes its journey first is mercury i think
Mercury
Mercury's surface gets hotter than any other planet because it is closest to the sun.
The particles in Mercury are different because mercury is much, much, much hotter planet than earth. the particles are hot and wispy. DOISHABOO!!!
mercury
It is larger than the planet Mercury.
No known planet is smaller than Mercury since Pluto was reclassified as a Dwarf Planet.
Titan is larger than Mercury, but Titan is a moon, not a planet.
Mercury is smaller than Titan, but Titan is a moon, not a planet.
Mercury is not the coldest planet because it has more solar radiation than all of the other planets. This is because it is closer to the Sun. However, Mercury is not the hottest planet in the Solar System. See related question.