Here is our post about the visible planets: Visible Planets.
Here is our post for the other visible planets: Visible Planets August 2015 – Mars, Jupiter and Saturn
Mercury has the honour of being the closest planet to the Sun. It’s round the Sun takes 88 days. So, a Mercury year is 88 Earth days long.
Now, a Mercury day is 176 Earth days long! It spins or rotates very slowly on its own axis.
Mercury passes over the Sun every 7 years. This next happens on May 16th 2016. I’ll order some of the special glasses early. We never look at the Sun, Brian Cox says not to!