Mercury is the closest planet to the Sun and the least explored of the four inner rocky planets. Its surface is covered in grayish-brown dust and looks similar to our Moon, with lots of craters where it has been hit by space rocks. Scientists think there is no possibility of life here.
Smallest planet
Mercury is the smallest of the eight planets in our Solar System – it is only slightly bigger than the Earth’s Moon.
Extreme temperatures
Mercury is a world of extreme temperatures. By day it is scorching hot, but at night it is very cold.
What’s inside?
Mercury has a rocky surface, but inside is a very large metallic core, part of which is molten (liquid).
Planet-gazing
People have been observing Mercury for a very long time, but nobody knows who discovered it. Sometimes it can be seen from Earth around sunset and sunrise.
Visible at night
Mercury is not the only planet that can be seen with the naked eye. The others are Venus, Mars, Jupiter and Saturn.
Picture Credit : Google