When we look at the Moon from Earth, we always see the same side. Until Luna 3 sent
back photos in 1959, no-one knew what the other side looked like.
The Moon is nearly twice as big as the planet

The "Man in the Moon" isn't always seen as a man. People from India see an old woman
with a spinning wheel. People from Mexico see a rabbit!
The Moon is not that small compared to the
Earth. Sometimes the Earth and Moon together
are called a binary or double planet system.

The Moon does not have any atmosphere. It also doesn't have any liquid water on its
surface. During the day it becomes very hot, but at night it is icy cold. A person visiting the
Moon needs an air supply and a special suit.

The Moon has many craters on its surface. The largest one is called the South Pole-Aitken
Basin and is roughly 2500 km across.

We think nearly all the craters on moons or planets were made by huge rocks hitting them
a long time ago. They are called impacts.

Some of the craters on the Moon look as if they have rays coming out of them. These rays
are rocks thrown across the Moon by the impacts that made the craters. Some of the
craters around the bottom of the Moon may have ice in them.

There are also darker areas called maria (said "MARR-ee-ah"). These are large pools of
lava that cooled a long time ago. Most maria are on the side of the Moon we see from Earth.
The lighter areas on the Moon are highlands.

How long is the Moon's revolution?
The Moon takes just over 27 Earth days to rotate (rotate means spin around) once.

How long is a year on the moon?
The Moon also takes just over 27 days to orbit (move around) the Earth. This is why we
always see the same side of the Moon when we look from the Earth. We call this side the
near side. The other side we call the far side. In 1959 a probe sent back pictures of the far
side. That was the first time anyone saw what it looked like.

What is the moon made of?
The surface of the Moon is made of rocks and dust. The outer layer of the Moon is called
the crust. The crust is about 70 km thick on the near side and 100 km thick on the far side. It
is thinner under the maria and thicker under the highlands. There may be more maria on
the near side because the crust is thinner. It was easier for lava to rise up to the surface.

We think the Moon has a small core (centre) about 300 km across. The core is composed
of solid iron. Because the core is solid, the moon does not have its own magnetic field.

How much would the moon's gravity pull on me?
If you were on the Moon, it would pull you down about a sixth as much as the Earth does, so
you'd weigh a sixth as much. So would anything else. That's why it was much easier for the
astronauts visiting the Moon to pick up rocks there.

Who is the moon named after?
The names Moon and month both come from the ancient Greek name for the Moon, Mene.
There have been other names for the Moon, like Selene and Luna. Selene was the Greek
goddess of the Moon. Luna was the Roman goddess of the Moon. The Roman people also
associated their goddess Diana with the Moon.

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Our Solar System
Our Solar System
This comprehensive book
contains information on all major
planets, major star
constellations, space
exploration and our solar
system. Included are fact
sheets, fast facts,
wordsearches, crossword
puzzles, Q's & A's, Student
Activity Sheets, Teacher/parent
resources and tips, lesson
plans and crafts and activities.  
Preview entire book 208 pages
The Chinese lunar calendar dates back to the second millennium BC.
The Chinese calendar is cyclical. Each cycle is made up of 12
years; after the 12th year, the cycle is repeated.  
This book
contains comprehensive teacher/parent resources, lesson plans
and activities relating both to the Chinese Zodiac and to the
Chinese New Year. A Fun interactive learning experience for Gr
K-5  with a particular focus on adjectives,  characteristics and
Preview the entire book here