A presentation on how the moon formed.

1. How the moon
came into
being?
BY: Muhammad
Hassaan Anjum

2. What is moon?
× The Moon is a rounded astronomical
body of planetary mass, rocky silicate
composition and without significant
atmosphere, hydrosphere or magnetic
field.
× It is orbiting the planet Earth of the inner
Solar System, as Earth's only natural
satellite.
× Its surface gravity is about a sixth of
Earth's with 0.1654 g. 2

3. How the moon
came into being?
After the sun spun to light, the planets of
the solar system began to form. But it
took another hundred million years for
Earth's moon to spring into existence.
There are three theories as to how our
planet's satellite could have been
created:
1. Giant impact hypothesis,
2. the co-formation theory
3. the Capture theory.

4. 1. The giant impact hypothesis
The giant-impact hypothesis,
sometimes called the Big Splash, or
the Theia Impact, suggests that the
Moon formed from the ejecta of a
collision between the proto-Earth
and a Mars-sized planetesimal,
approximately 4.5 billion years ago,
in the Hadean eon (about 20 to 100
million years after the Solar System
coalesced).

5. × The co-formation theory explains the origin of the moon as an object which
formed out of the primitive solar nebulaaat the same time and roughly the
same place as the Earth. As shown in this picture, while they were forming in
the solar nebula, the nucleii of the moons-to-be (called protomoons) drew
material to themselves from the cloud of gas and dust around them.
× Because the proto-moon was so close to the proto-earth the nebular material
out of which they both formed ought to be very similar, composed mostly of
rocky material rather than volatile gases.
× The co-formation theory explains why the moon appears in the location it
does but it does not explain the evidence that the Earth and Moon do not
appear to be made of the same material.
2.The co-formation theory

6. The Capture Theory
3.The Capture Theory
The capture theory of the origin of the solar
system, which was developed by the authors
over the last 25 years is discussed in this
book, starting with a discussion of the
interstellar medium and concluding with
explanations of nearly all the important
features of the present system.During the
development of the theory an explanation of
isotropic anomalies in meteorites is given-one
of the outstanding current problems of the
planetary science

7. Any
Questions?

8. White
Is the color of milk and
fresh snow, the color
produced by the
combination of all the
colors of the visible
spectrum.
You can also split
your content
Black
Is the color of coal, ebony,
and of outer space. It is the
darkest color, the result of
the absence of or complete
absorption of light.
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