Planets: Mercury

CJ in the solar system

Part I: Crtfytfyda Jdcydjbopjn on Mercury

This is Crtfytfyda Jdcydjbopjn, CJ for friends. He has lived all his life on Mercury and knows everything about his little planet:

• The mass is 330 yottagram.
• The radius is 2 megameter.
• It is about 58 gigameter from the sun.

He loves his life on Mercury and enjoys the weather. The temperature ranges from -180 °C to 430 °C and the sun rises twice a day. Usually he goes ice skating on the north pole. However his friend Emma is throwing a party at Pluto.

Pluto is 6 terameter from the sun. That is a long way from Mercury. He decides to leave early, because the speed limit has recently been decreased to 300 megameter a second.

Help CJ and convert all his information to SI units. Round your answer to the nearest integer.

Hints:

kilo $10^3$, mega $10^6$, giga $10^9$, tera $10^{12}$, peta $10^{15}$, exa $10^{18}$, zetta $10^{21}$, yotta $10^{24}$

0 °C is 273.15 K.

Well done! C.J. is very happy with your help. He can now leave his planet and begin his journey to Emma's party.

Part II: Clare on Venus

Mercury

Also known as Hermes in Greek mythology, this tiny planet closest to the sun has an year of 116 Earth days. Quite appropriately named when you think about it, since Hermes was very swift in delivering messages from each god to another.

Having almost no atmosphere, temperatures can vary from 100K (-173C, -280F) to 700K (427C, 800F). If you're really into seeing Mercury, you should wait till the evening or early morning, though it isn't very bright.

Mercury's core is made of iron and nickle, and takes up about 43% percent of the little planet's volume. That's about as much muscle in an average person.