4. -Mercury orbits round the sun,its orbit
of the sun lasts for 88 days.
-Mercury turns very slowly on its axis,
taking 59 days to complete the turn
from day to night.
6. Mercury has no atmosphere around it
to protect it from the Sun or to
retain any heat.
Mercury's dry side has a
temperature going down to 200º
celsius.
7. The surface of Mercury is covered with
craters and it is completely dry.
