EARTH

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 A galaxy is a set of bodies
consisting of millions of stars with
gas and dust particles.

 3 types of galaxies :
a) Elliptical galaxies
b) Spiral galaxies
c) Irregular galaxies

 Our solar system is situated in the
Milky way galaxy.

 The Milky Way is a medium large
spiral galaxy.

 The Milky Way consists of
approximately 200 billion stars and
the Sun is one of it.











Most of the stars in our galaxy are thought to host
their own families of planets. The Milky Way galaxy is
just one of the billions of galaxies in the universe. The
universe is a vast expanse of space that contains all of
everything in existence. The universe contains all of
the galaxies, stars, and planets.

There are approximately 2,000,000,000,000
galaxies in the universe – that's 2 trillion. 15,000
galaxies appear as small dots and blots in this NASA
photograph of the night time sky. Each galaxy contains
billions of stars.

The universe is beautiful and unique. There are
millions of galaxies in the universe. The Milky Way is
one if the many galaxies in the universe. In the Milky
Way, there is a solar system which consists if eight
planets that orbit the Sun, and this includes the Earth
where we live in.

The Earth is smaller than a speck of dust in the
universe. Can you imagine how vast this universe
created by God is? We ca never see the end of it. We
should be thankful for the beauty of this universe which
is a symbol of God’s supremacy.

Our solar system consists of our star, the Sun, and
everything bound to it by gravity – the planets Mercury,
Venus, Earth, Mars, Jupiter, Saturn, Uranus, and
Neptune; dwarf planets such as Pluto; dozens of moons;
and millions of asteroids, comets, and meteoroids.

The Solar System provides the only known
example of a habitable planet, the only star we can
observe close-up, and the only worlds we can visit
with space probes. Solar System research is essential
for understanding the origin and evolution of planets,
along with the conditions necessary for life.